blackstone-labs.com

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# Blackstone Laboratories

Oil Analysis - Learn What's Going On In Your Engine

## Sitemaps

- [XML Sitemap](https://www.blackstone-labs.com/sitemap.xml): Contains all public & indexable URLs for this website.

## Posts

- [Beck](https://www.blackstone-labs.com/beck/) - Beck brings his data entry and receiving skills to Blackstone from a life in merchandising. When he's not enjoying life in the world of oil samples, you’ll find him spending time with family, enjoying the outdoors, listening to music, trying good food, and making friends with just about any animal he meets. He appreciates life’s
- [Chrissie](https://www.blackstone-labs.com/chrissie/) - Chrissie came to Blackstone from a racing family. She grew up at local race tracks watching her Dad race and work with cars, so joining Blackstone was clearly written in the stars. Besides racing, Chrissie enjoys gardening and, oddly enough, cleaning. Het two teenagers are her whole world, though working at Blackstone might give them
- [Emily](https://www.blackstone-labs.com/emily/) - Emily spends her days slinging oil in the lab, but when she's not working, she spends her time outdoors with her kid or building (and hopefully not stepping on) something with Legos. And when she's not doing that, she's playing video games with friends. She has a puppy named Finley and a cat named Timmy,
- [Amy](https://www.blackstone-labs.com/amy/) - Amy worked in the printing world for almost 23 years before deciding it was time for a change, landing her here at Blackstone. She is a Tampa Bay Buccaneers fan and loves to make the trip to Raymond James Stadium with her husband to watch them play. When not lucky enough to be soaking up
- [Savannah](https://www.blackstone-labs.com/savannah/) - When Savannah is off the clock, she enjoys the simple things in life - loving on her three precious cats, listening to a podcast, or spending quality time with friends and family. During the summertime, you can find her kayaking out on a lake or taking a long walk through the woods. For as long
- [Normal vs. Abnormal Results](https://www.blackstone-labs.com/normal-vs-abnormal-results/) - What do abnormal results look like?
- [What Does a 10,000-Mile Oil Change Look Like?](https://www.blackstone-labs.com/what-does-a-10000-mile-oil-change-look-like/) - Real samples from engines running 10,000, 20,000, and 30,000+ miles on the oil
- [Ben](https://www.blackstone-labs.com/ben/) - A man of mystery, Ben is an ace sample jockey over in the lab. What else do we know about Ben? He’s the proud parent of a toddler, at least at press time. Clearly he likes balloons. He’s got a fearsome beard. The rest will have to be up to your imagination, because Ben ain’t
- [STi Bearing Wear](https://www.blackstone-labs.com/sti-bearing-wear/)
- [Mazda Differential](https://www.blackstone-labs.com/mazda-differential/)
- [Mustang's Bad Timing Chain](https://www.blackstone-labs.com/mustang-timing-chain/)
- [Toyota Sludge Problem](https://www.blackstone-labs.com/toyota-sludge-problem/)
- [Nice Honda!](https://www.blackstone-labs.com/nice-honda/)
- [Suburban with Ring Wear](https://www.blackstone-labs.com/suburban-with-ring-wear/)
- [Corvette with Antifreeze](https://www.blackstone-labs.com/corvette-with-antifreeze/)
- [Can I Do My Annual Inspection Myself?](https://www.blackstone-labs.com/can-i-do-my-annual-inspection-myself/) - With an experimental aircraft, your annual inspection is pretty much a DIY job. Here's how Blackstone's Ryan Stark tackled the job.
- [How to Build an Engine Dehumidifier](https://www.blackstone-labs.com/building-an-engine-dehumidifier/) - Avoid corrosion and keep your aircraft engine in good shape with this home-built dehumidifier.
- [How Do I Inspect My Oil Filter?](https://www.blackstone-labs.com/how-do-i-inspect-my-oil-filter/) - Sure, you could send us your oil filter for analysis. OR you can learn to do it yourself. Here's all you need to know to do your own oil filter inspection.
- [Does Acidity in Oil Matter?](https://www.blackstone-labs.com/does-acidity-in-oil-matter/) - Is acidity in aircraft oil a problem? This article breaks down what the data shows in more than 50 oil analysis reports.
- [What are Insolubles & Why do They Matter?](https://www.blackstone-labs.com/what-are-insolubles-and-why-do-they-matter/) - What are insolubles and what causes them to form? Do you need to worry when they show up in your oil analysis report? Read on to learn more.
- [Is Fuel in Aircraft Oil a Problem?](https://www.blackstone-labs.com/is-fuel-in-aircraft-oil-a-problem/) - Why does fuel contamination show up in aircraft engine oil, and what can you do about it? Read on to learn more!
- [Do I Need to Use Ashless Aircraft Oil?](https://www.blackstone-labs.com/do-i-need-to-use-ashless-aircraft-oil/) - Ashless dispersant oil is special oil for aircraft engines to help protect again pre-ignition and detonation. But what exactly does ashless mean?
- [Concerned about EGTS?](https://www.blackstone-labs.com/concerned-about-egts/) - There's a lot of misinformation out there about exhaust gas temps in an aircraft engine. Here's what you need to know, straight from Mike Busch.
- [Aircraft Problems: Should I Be Worried?](https://www.blackstone-labs.com/aircraft-problems-how-worried-should-i-be/) - How worried should you be when something's wrong with your oil report? We break down problems into categories to help you stop losing sleep.
- [What are Pre-Ignition and Detonation?](https://www.blackstone-labs.com/what-are-pre-ignition-and-detonation/) - Pre-ignition. Detonation. Both can be deadly. But what’s the difference? And how can you avoid them?
- [How Can I Protect My Aircraft Engine from Corrosion?](https://www.blackstone-labs.com/how-to-protect-aircraft-from-corrosion/) - Corrosion can wreak havoc in an aircraft engine. Find out more about what corrosion is, and how you can fight it to keep your engine wearing well for years
- [How Does Flying in the Air Race Classic Affect Engine Wear?](https://www.blackstone-labs.com/how-does-air-race-classic-affect-wear/) - About like you'd think!
- [How Do Aircraft Engines Perform on Unleaded Fuel?](https://www.blackstone-labs.com/how-do-aircraft-perform-on-unleaded-fuel/) - It's a new world with unleaded gas
- [Is a Bypass Oil Filter Worth it?](https://www.blackstone-labs.com/is-a-bypass-oil-filter-worth-it/) - We like them. Read on to see why.
- [What's the Best Oil Change Interval?](https://www.blackstone-labs.com/oil-change-intervals-one-size-doesnt-fit-all/) - The best oil change interval differs for everyone. We use the TBN, among other things, to see what's right for you, your engine, and how you use it.
- [Do I Need to Worry About Fuel?](https://www.blackstone-labs.com/do-i-need-to-worry-about-fuel/) - Why does fuel show up in the oil? Blackstone's Amanda Callahan experimented with her Kia to see what factors cause fuel to show up.
- [Does it Matter How You take a Sample?](https://www.blackstone-labs.com/does-it-matter-how-you-take-a-sample/) - Does it matter how you take a sample? Blackstone experiments with sampling at the beginning, middle, and end of the drain, plus with a pump.
- [TBN/TAN: Do You Need One?](https://www.blackstone-labs.com/tbn-tan-do-you-need-one/) - What exactly is a TBN or TAN, and do you need one with your oil sample?
- [Do You Need ZDDP?](https://www.blackstone-labs.com/do-you-need-zddp/) - How important is ZDDP in flat-tappet engines? Blackstone does an experiment to find out.
- [What's the Best Kind of Oil?](https://www.blackstone-labs.com/whats-the-best-kind-of-oil/) - What's the best oil to use? Ryan Stark, Blackstone's president, reveals his favorite.
- [How Does Heat Affect the TBN & TAN?](https://www.blackstone-labs.com/tbns-tans-part-2/) - It's a factor, for sure
- [Is Fuel Dilution Just a Hybrid Thing?](https://www.blackstone-labs.com/is-fuel-dilution-just-a-hybrid-thing/) - Fuel in a hybrid is pretty common
- [Mark S.](https://www.blackstone-labs.com/mark-s/) - I've known for 20 years (both in my personal use and in my work) that your lab work/analyses and reports are top notch. But even your website continues to be one of the absolute best customer interfaces I've used. (I also enjoy the newsletters and FB posts when I have the time to read them.)
- [John A.](https://www.blackstone-labs.com/john-a/) - I appreciate your response, you guys are superior to AOA as I've used both recently. Your custom touch and response sets you apart and I tell all my buddies at the hangars the same. Keep it up!
- [Steve B.](https://www.blackstone-labs.com/steve-b/) - Hey, thanks you guys. Not kidding y'all are the best! I can't afford right now to get a new car and based on what you tell me I don't have to. The piece of mind that you provide me with means a lot. Thank you!
- [Jennifer W.](https://www.blackstone-labs.com/jennifer-w/) - I just wanted to take the opportunity to thank you guys for what you do. You are very good with the podcast. I love it and have been binge listening since I found you. Have a great day and my hubby said he DID taste oil before... typical shadetree mechanic I guess. 😊
- [Blackstone vs. Artificial Intelligence](https://www.blackstone-labs.com/blackstone-vs-artificial-intelligence/) - Late one afternoon about a month ago, one of our analysts pulled up a report on a guy’s 2022 Tundra. On the oil slip, the customer mentioned that he was sharing his Blackstone report in one of his YouTube videos — which we generally really like since it gets our name out there. But then
- [This Ain't Your Daddy's ATF](https://www.blackstone-labs.com/this-aint-your-daddys-atf/) - Transmissions - and their oils - are getting changing and improving. From lifetime oil to CVTs, here's what we know.
- [Rebuilding a GM 350 Engine](https://www.blackstone-labs.com/rebuilding-a-gm-350-engine/) - Jim and Ryan Stark rebuilt an 84 Chevy 350 engine. It wasn't an easy job!
- [How Often Should You Change Your Oil?](https://www.blackstone-labs.com/how-often-should-you-change-your-oil/) - How often should you change your oil? It differs for everyone. Learn what we look at in an oil sample to determine the optimal oil change.
- [Do I Need a TBN?](https://www.blackstone-labs.com/do-i-need-a-tbn/) - What is a TBN (total base number) and do you need one? Read on to see if this is a good test for you.
- [The Silicon Question](https://www.blackstone-labs.com/the-silicon-question/) - Silicon can have several sources - some harmful and some not. See where it comes from and how much of a concern it is when it shows up in your oil report.
- [Industrial Oil Analysis](https://www.blackstone-labs.com/industrial-oil-analysis/) - Industrial machines run on oil, but oil that becomes wet, acidic, or abrasive will become a liability. Oil analysis can help prevent problems and save money.
- [Particle Count Test](https://www.blackstone-labs.com/particle-count-test/) - What is a particle count test, and do you need one for your facility's industrial oil samples? We break down the PC and what it can tell you.
- [What are Insolubles?](https://www.blackstone-labs.com/what-are-insolubles/) - How good a job is your oil filter doing? We use the insolubles test to measure solids and find out.
- [Spectrometry: The Marvel of the Lab](https://www.blackstone-labs.com/draft-post/) - Oil analysis uses a spectrometer to look at wear metals, additives, and contamination in engine oil. We compare your numbers to averages to see what's normal.
- [What is a Flashpoint?](https://www.blackstone-labs.com/what-is-a-flashpoint/) - We use the flashpoint test to see if your engine oil has fuel in it. But how much is too much? Here's how it works.
- [Soot: How Much is too Much?](https://www.blackstone-labs.com/soot-how-much-is-too-much/) - Soot is nearly unavoidable in a diesel engine, but how much is too much? Our soot testing can help you get a handle on it.
- [Motorcycle Analysis](https://www.blackstone-labs.com/motorcycle-analysis/) - Motorcycle engine leads a hard life, and it often shares the oil with the transmission. Read on to see what oil analysis can tell you.
- [About Aircraft Oil](https://www.blackstone-labs.com/about-aircraft-oil/) - Aircraft oil (which is ashless) is different from the oil you'd put in your car or truck. Is there a best brand to use? See what the oil experts think.
- [Which Oil is Best?](https://www.blackstone-labs.com/which-oil-is-best/) - Which oil is best? There might not be one single oil that beats all the others, but there are some things to avoid if you want to do a sample.
- [Pre-Buy Samples: The Art of the (Craigslist) Deal](https://www.blackstone-labs.com/pre-buy-samples-the-art-of-the-craigslist-deal/) - If you're wanting to buy a used car, there's only one way to know if the engine's in good shape: take a sample of the engine oil before you buy.
- [Oil Viscosity](https://www.blackstone-labs.com/oil-viscosity/) - What does the viscosity test look at? What viscosity oil should you use? What causes a viscosity to change? We explain all you need to know about oil's grade.
- [Tales From the Oily Side](https://www.blackstone-labs.com/tales-from-the-oily-side/) - Starting a business isn't for the faint of heart! Here's the story of Blackstone's founding in 1985 - the ultimate About Us, with all the ups and downs.
- [Under Pressure! (Part 1)](https://www.blackstone-labs.com/under-pressure/) - Senior Analyst Amanda Callahan's plane lost oil pressure in flight. Learn what happened and how they handled the decision of whether to overhaul or not.
- [Under Pressure! (Part 2)](https://www.blackstone-labs.com/under-pressure-part-2/) - Senior Analyst Amanda Callahan's plane lost oil pressure in flight. Learn what happened and how they handled the decision of whether to overhaul or not.
- [Emergency!](https://www.blackstone-labs.com/emergency/) - Nothing gets the heart going like a sudden emergency in flight. Here's Ryan Stark's story - what happened, and how he got out of it.
- [Building an RV-12 (Part 1)](https://www.blackstone-labs.com/building-an-rv-12-part-1/) - Blackstone's founder Jim Start starts down the road of building his dream plane: A Vans RV-12.
- [Building an RV-12 (Part 2)](https://www.blackstone-labs.com/building-an-rv-12-part-2/) - Thinking of building your own Vans aircraft? Follow along and see what it's like as Blackstone's own Ryan Stark builds an RV-12.
- [Building an RV-12 (Part 3)](https://www.blackstone-labs.com/building-an-rv-12-part-3/) - The third part in Ryan's series on building his Vans RV-12 aircraft.
- [How Often Should I Change My Oil?](https://www.blackstone-labs.com/how-often-should-i-change-my-oil/) - How often should you change your oil? It depends, and it's different for everyone. Here are the factors we use in determining oil change intervals.
- [Critical Component Failures](https://www.blackstone-labs.com/critical-component-failures/) - Learn what the critical components of aircraft engines are, the consequences of failure, and proper maintenance to deal with failures effectively and cost-effectivly.
- [Sudden Landing? Remember TWIT](https://www.blackstone-labs.com/sudden-landing-remember-twit/) - No one wants a sudden landing in their aircraft, but if it happens to you, here's what to do.
- [Blackstone and the Post Office](https://www.blackstone-labs.com/blackstone-and-the-post-office/) - In a cage match between Blackstone and the USPS, there can only be one winner. And it's not the post office.
- [Ryan's Cholesterol](https://www.blackstone-labs.com/37157-2/) - Ryan Stark reflects on his cholesterol test and what it has in common with engine oil testing.
- [The eBay Oils (Part 1)](https://www.blackstone-labs.com/the-ebay-oils-part-1/) - What additives did engine oil have back in the old days? Blackstone bought about 30 cans off eBay and cracked them open to find out.
- [The eBay Oils (Part 2)](https://www.blackstone-labs.com/the-ebay-oils-part-2/) - Part 2 in our quest to see what additives engine oil used back in the old days. From Trop-Arctic to Fix Head to old cans of Mobil, read on to see what's inside.
- [The eBay Oils (Part 3)](https://www.blackstone-labs.com/the-ebay-oils-part-3/) - Part 3 in our quest to see the additives used in engine oil back in the day. From Sinclair and Lucky Strike, to old cans of Amsoil, read on see what's inside!
- [Antifreeze: The Silent Killer](https://www.blackstone-labs.com/antifreeze-the-silent-killer/) - Antifreeze is necessary for cooling, but if it gets into the oil, watch out. Coolant contamination is probably the #1 killer of gas and diesel engines.
- [Better Mileage with Synthetic?](https://www.blackstone-labs.com/better-mileage-with-synthetic/) - Should you use synthetic oil? We experiment to see if it makes a difference in a daily driver.
- [Do I Need to Worry?](https://www.blackstone-labs.com/do-i-need-to-worry/) - We get a lot of phone calls, and many of them boil down to: Do I need to worry about these results? Good news: bad results aren't always a problem!
- [Does Oil Brand Matter?](https://www.blackstone-labs.com/does-brand-matter/) - What's the best oil to use? And does oil brand matter? Read on to see what Blackstone thinks.
- [Fuel in Diesels](https://www.blackstone-labs.com/fuel-in-diesels/) - What causes fuel to show up in diesel engines, and how big a problem is it?
- [All About Insolubles](https://www.blackstone-labs.com/all-about-insolubles/) - What are insolubles and why do they form in your engine oil? Are they a problem and what can you do to limit them? Blackstone answers these questions and more.
- [Space Dust](https://www.blackstone-labs.com/space-dust/) - Where does dust and dirt come from? How does it get into your engine, and why is it a problem?
- [On Towing](https://www.blackstone-labs.com/towing/) - A story about Jim Stark's adventure while towing in the mountains in California. Sometimes towing is easier said then done!
- [Viscosity: Going Down!](https://www.blackstone-labs.com/viscosity-going-down/) - Engines are leaving the factory with thinner and thinner oils in place these days. What's behind this trend and how does it affect the engine?
- [How Often Should I Sample?](https://www.blackstone-labs.com/how-often-should-i-sample/) - How often do you need to take an oil sample? It depends on your goals, and a few other things.
- [The Lower Unit Blues](https://www.blackstone-labs.com/the-lower-unit-blues/) - Water contamination in a marine lower unit
- [The Renuzit Experiment](https://www.blackstone-labs.com/the-renuzit-experiment/) - Much has been said about the importance of ZDDP in older engines. Blackstone experimented by running an oil with no ZDDP at all in an 84 Chevy.
- [Landslide!](https://www.blackstone-labs.com/landslide/) - What does a landslide have in common with particles in an oil sample? Read on to find out!
- [In the Thick of it!](https://www.blackstone-labs.com/in-the-thick-of-it/) - Five cities, five days, 5000+ cars: the 2024 Hot Rod Power Tour!
- [Finishing the RV-12](https://www.blackstone-labs.com/finishing-the-rv-12/) - The last article in our series on finishing the RV-12
- [A New Wave](https://www.blackstone-labs.com/a-new-wave/) - Saying goodbye to my 1984 Chevy
- [40 Years of Testing Aircraft Oils](https://www.blackstone-labs.com/40-years-of-testing-aircraft-oils/) - Tracing Blackstone's 40-year evolution in aircraft oil testing
- [Suzi](https://www.blackstone-labs.com/suzi/) - Senior analyst Suzi is all about learning and making things. She designs knitting patterns for her Etsy store Nebulous Knits, focusing primarily on plush toys and educational models. She keeps freshwater planted aquariums, way too many houseplants and enjoys gardening in the summertime. She also hikes year round and brings her scruffy little dog Buddy
- [45-Year-Old Triumph Sample](https://www.blackstone-labs.com/45-year-old-triumph-sample/)
- [Megan](https://www.blackstone-labs.com/megan/) - When she’s not logging in your samples and answering your phone calls, Megan can be found reading, shopping, playing with her hound dog Bella, and tending to her many plants!
- [C-145 Wrist-Pin wear](https://www.blackstone-labs.com/c-145-wrist-pin-wear/)
- [F350 with Bad Bearings](https://www.blackstone-labs.com/f350-with-bad-bearings/)
- [Eric H](https://www.blackstone-labs.com/eric-h/) - When Eric doesn’t have his eyes on oil reports, he has them behind acorn hats. And when he doesn’t have them behind acorn hats, he has them in a book, on a screen (probably watching Fantastic Mr. Fox for the 50th time), or on the road while riding his bicycle. Eric also enjoys creative writing (mostly in
- [BMW S54 bearings](https://www.blackstone-labs.com/bmw-s54-bearings/)
- [A Taste of My Own Medicine](https://www.blackstone-labs.com/a-taste-of-my-own-medicine/) - Dealing with antifreeze in my own engine
- [Ryan](https://www.blackstone-labs.com/ryan/) - Ryan started at Blackstone in 1997 after graduating from Purdue University with a degree in mechanical engineering. Ryan is the President of Blackstone Laboratories, and he's responsible for writing and maintaining Blackstone’s software program, overseeing the lab, writing reports, and a million other things that need to be done in a business. When he’s not kicking
- [Isabella](https://www.blackstone-labs.com/isabella/) - If it has anything to do with animals, Isabella’s there. She graduated with a B.S. in Environmental Studies with concentrations in animal health/behavior and marine biology/sustainable aquaculture. Beyond that, she offers some of her free time to volunteer at Soarin’ Hawk and helps with avian care. Isabella’s love of animal science brought together her and
- [Shaylee](https://www.blackstone-labs.com/shaylee/) - Shaylee LOVES (yes, all caps) coffee. She also likes to read. Preferably both together, but presumably not at the same time as she's traveling to see different artists and going to concerts, which is another of Shaylee's passions. If she were to ever leave Fort Wayne (but why would she, she has the best job
- [Jay G.](https://www.blackstone-labs.com/jay-g/) - My mechanic filled a sample, but the outer shipping package disappeared. Your customer service agent on the phone was great, a real human!!! Had my info based on my phone number and what I needed on the way without me even giving my address. In a day of less and less, y’all give more. Thanks
- [Aaron P.](https://www.blackstone-labs.com/aaron-p/) - I want to say thanks so much for the diligent digging and helpful analysis from this series. This has likely saved me an epic, expensive failure at a race weekend! I have kicked off a rebuild for my spare engine and hopefully will have that resolved before this becomes a real issue. Many thanks, keep
- [Erika](https://www.blackstone-labs.com/erika/) - Erika is new to Fort Wayne and very excited to be here! She spent a handful of years in the social work field and has bachelors degrees in psychology and criminal justice. When not working, She's usually curled up with a book and at least one of her five (!) cats. Erika is a big
- [Holli](https://www.blackstone-labs.com/holli/) - Holli is a Fort Wayne native, but spent her twenties traveling to as many places she could. That led to her living in Thailand for a year, working for an anti-trafficking organization. Holli fell in love with words at a young age, and since her dad worked for a book distribution warehouse, he made sure
- [Deborah](https://www.blackstone-labs.com/deborah/) - Some people don’t discover their passion until late in life, but Deborah was not one of those people. She fell in love with the written word at seven and has known she wanted to be a writer ever since. To be sure, like all children, she went through phases of wanting other things, but writing
- [Susan](https://www.blackstone-labs.com/susan/) - Sometime around 1987 Susan sat in the driver’s seat of an Alfa Romeo Spider and her life-long love of engines was born. She recently bought a motorcycle, so she can be cool like her teenage son and embarrass him at the local meets. A lover of all things Genesis, when not writing about oil, she
- [Alex](https://www.blackstone-labs.com/alex/) - Alex moved to Fort Wayne and started at Blackstone after graduating from college in Muncie, Indiana. He’s the only one of his five siblings to attain a college degree—way to go, Alex! Having horses, chickens, dogs, cats, goats, and pigs growing up, Alex is currently animaled-out, but if he were to have a pet, he
- [Clay B.](https://www.blackstone-labs.com/clay-b/) - I just want you all to know how much I enjoy receiving your reports. They are personal and worded in a way that helps me understand what’s going on with my car. Thank you for that and you all should be very proud of the business you have created.
- [Ope O.](https://www.blackstone-labs.com/ope-o/) - You guys were spot on! My Corvette's engine was just replaced with "cracked piston" as the reason. Reason? They don't know, i image it can be hard to diagnose but they claim metallurgy.
- [Casper Air Service](https://www.blackstone-labs.com/casper-air-service/) - Blackstone Labs is our trusted partner in maintaining our customers' engines in top condition, identifying trends before they become problems, and helping us deliver service for our customers' aircraft to remain SAFE, AIRWORTHY, LEGAL, and RIGHT!
- [Continental with Washboarded Cylinders](https://www.blackstone-labs.com/continental-with-washboarded-cylinders/)
- [Cummins ISX 15 with Fuel](https://www.blackstone-labs.com/cummins-isx-15-with-fuel/) - A Blackstone Labs report from a Cummins ISX engine that had a fuel system problem.
- [Thomas D.](https://www.blackstone-labs.com/thomas-d/) - We first thought the high temp on the oil was due to a couple of small exhaust leaks at the cylinder flange blowing on the push rod tubes. The AI was in the process of replacing the gaskets when he asked if I had cut the filter open. He too was worried about the source
- [Lucy](https://www.blackstone-labs.com/lucy/) - Lucy is part of a magnificent herd of children who all inherited the family tendency to be jacks of all trades (even if masters of none). This might mean she's had less of a career and more of a Series of Interesting Events, but it translates pretty well into fulfilling her designated role in almost
- [Katie](https://www.blackstone-labs.com/katie/) - Born and raised in Fort Wayne, Katie would love to tell you that she used to live in San Francisco. She is working on not mentioning it so often. She’s been a professional gift wrapper, a college instructor, a digital marketing copywriter, and a project manager, and now she is happy to be able to
- [Olivia](https://www.blackstone-labs.com/olivia/) - Olivia earned her degree in video production and screenwriting from Ball State University. While there, she founded and served as president for the Cardinal Aces, BSU’s very first drone club, and studied abroad in Korea for advanced video production. She holds her own commercial drone pilot’s license. She also pursued a minor in Japanese, which
- [Gale M.](https://www.blackstone-labs.com/gale-m/) - I absolutely love how simple you make this process for us non-professionals! Thanks for the great summary and the care that is taken to compare results against run hours. This report is invaluable to me. I'm a 60- something female that never even changed the oil in her car. Bought a boat so I could
- [2000 Expedition](https://www.blackstone-labs.com/2000-expedition/) - A Blackstone Laboratories oil report from a 2000 Ford Expedition engine.
- [2014 Cruze](https://www.blackstone-labs.com/2014-cruze/) - A Blackstone Laboratories oil report from a 2014 Chevy Cruze engine.
- [1936 Cat Bulldozer](https://www.blackstone-labs.com/1936-cat-bulldozer/) - A Blackstone Laboratories oil report from a 1936 Cat bulldozer engine.
- [1949 Ford](https://www.blackstone-labs.com/1949-ford/) - A Blackstone Laboratories oil report from a 1949 Ford engine.
- [1959 Porsche](https://www.blackstone-labs.com/1959-porsche/) - A Blackstone Laboratories oil report from a 1959 Porsche engine.
- [1965 Mustang](https://www.blackstone-labs.com/1965-mustang/) - A Blackstone Laboratories oil report from a 1965 Mustang engine.
- [1976 Honda CB550](https://www.blackstone-labs.com/1976-honda-cb550/) - A Blackstone Laboratories oil report from a 1976 Honda motorcycle engine.
- [1988 F150](https://www.blackstone-labs.com/1988-f150/) - A Blackstone Laboratories oil report from a 1998 F150's engine.
- [1994 F150](https://www.blackstone-labs.com/1994-f150/) - A Blackstone Laboratories oil report from an F150's engine.
- [1995 Land Cruiser](https://www.blackstone-labs.com/1995-land-cruiser/) - A Blackstone Laboratories oil report from a 1995 Land Cruiser engine.
- [1997 Foretravel RV](https://www.blackstone-labs.com/1997-foretravel-rv/) - A Blackstone Laboratories oil report from an RV engine.
- [1998 BMW 540i](https://www.blackstone-labs.com/1988-bmw-540i/) - A Blackstone Laboratories oil report from a 1998 BMW 540i engine.
- [2000 Jeep Wrangler](https://www.blackstone-labs.com/2000-jeep-wrangler/) - A Blackstone Laboratories oil report from a Jeep Wrangler's engine.
- [2003 Mustang](https://www.blackstone-labs.com/2003-mustang/) - A Blackstone Laboratories oil report from a 2003 Mustang
- [2007 Frontier](https://www.blackstone-labs.com/2007-frontier/) - A Blackstone Laboratories oil report from a 2007 Nissan Frontier engine.
- [2007 GTI](https://www.blackstone-labs.com/2007-gti/) - A Blackstone Laboratories oil report from a 2007 GTi.
- [2008 BMW M3 S65](https://www.blackstone-labs.com/2008-bmw-m3-s65/) - A Blackstone Laboratories oil report from a BMW M3 S65 engine.
- [2012 Mustang](https://www.blackstone-labs.com/2012-mustang/) - A Blackstone Laboratories oil report from a 2012 Mustang.
- [2014 Ram](https://www.blackstone-labs.com/2014-ram/) - A Blackstone Laboratories oil report from a 2014 Ram.
- [2016 Subaru BRZ](https://www.blackstone-labs.com/2016-subaru-brz/) - A Blackstone Laboratories oil report from a 2016 Subaru BRZ's engine.
- [Another 2000 Expedition](https://www.blackstone-labs.com/another-2000-expedition/) - A Blackstone Laboratories oil report from a 2000 Expedition's engine.
- [BMW 328](https://www.blackstone-labs.com/bmw-2/) - A Blackstone Laboratories oil report from a BMW 328 engine.
- [BMW S54](https://www.blackstone-labs.com/bmw-s54/) - A Blackstone Laboratories oil report from a BMW S54 engine.
- [Cat 3208 Marine Port](https://www.blackstone-labs.com/cat-3208-marine-port/) - A Blackstone Laboratories oil report from the port side of a Cat 3208 engine.
- [Cat 3208 Marine Starboard](https://www.blackstone-labs.com/cat-3208-marine-starboard/) - A Blackstone Laboratories oil report from the starboard side of a Cat 3208 marine engine.
- [Cat Gear Oil](https://www.blackstone-labs.com/cat-gear-oil/) - A Blackstone Laboratories oil report from gear oil in a Cat.
- [Circular Saw](https://www.blackstone-labs.com/circular-saw/) - A Blackstone Laboratories oil report from a circular saw with 22-year-old oil.
- [Corvette LS-7](https://www.blackstone-labs.com/corvette-ls-7/) - A Blackstone Laboratories oil report from a Corvette LS-7's engine.
- [Cummins ISX 15](https://www.blackstone-labs.com/cummins-isx-15/) - A Blackstone Laboratories oil report from a Cummins ISX 15 engine.
- [F350](https://www.blackstone-labs.com/f350/) - A Blackstone Laboratories oil report from an F350's engine.
- [Honda S2000](https://www.blackstone-labs.com/honda-s2000/) - A Blackstone Laboratories oil report from a Honda S2000's engine.
- [Kia w/Oil Run 30,000 Miles](https://www.blackstone-labs.com/kia-w-oil-run-30000-miles/) - A Blackstone Laboratories oil report from a Kia with 30,000 miles on the oil.
- [Mustang Bullit](https://www.blackstone-labs.com/mustang-bullit/) - A Blackstone Laboratories oil report from a Mustang Bullit's engine.
- [RAV4 Transmission w/254K on the Oil](https://www.blackstone-labs.com/rav4-transmission-w-254k-on-the-oil/) - A Blackstone Laboratories oil report from a Rav4's transmission with 254,000 miles on the oil.
- [Subaru Legacy](https://www.blackstone-labs.com/subaru-legacy/) - A Blackstone Laboratories oil report from a Subaru Legacy's engine.
- [Tohatsu Marine Lower unit](https://www.blackstone-labs.com/tohatsu-marine-lower-unit/) - A Blackstone Laboratories oil report from a Tohatsu marine lower unit.
- [Volvo D54](https://www.blackstone-labs.com/volvo-d54/) - A Blackstone Laboratories oil report from a Volvo D54 engine.
- [Yamaha YZR-F6](https://www.blackstone-labs.com/yamaha-yzr-f6/) - A Blackstone Laboratories oil report from a Yamaha YZR-F6 engine.
- [Wright R 1820](https://www.blackstone-labs.com/wright-r-1820/) - A Blackstone Laboratories oil report from a Wright R1820 engine.
- [Velocity IO 550](https://www.blackstone-labs.com/velocity-io-550/) - A Blackstone Laboratories oil report from a Velocity's IO-550 engine.
- [Superior XPIO 360](https://www.blackstone-labs.com/superior-xpio-360/) - A Blackstone Laboratories oil report from a Superior XPIO-360 engine.
- [Sky Ranger C 85](https://www.blackstone-labs.com/sky-ranger-c-85/) - A Blackstone Laboratories oil report from a Sky Ranger C85.
- [Rev X In Aircraft](https://www.blackstone-labs.com/rev-x-in-aircraft/) - A Blackstone Laboratories oil report from an aircraft engine using RevX additive.
- [Pratt and Whitney R 2800](https://www.blackstone-labs.com/pratt-and-whitney-r-2800/) - A Blackstone Laboratories oil report from a Pratt & Whitney R2800.
- [Piper Saratoga IO 540](https://www.blackstone-labs.com/piper-saratoga-io-540/) - A Blackstone Laboratories oil report from a Piper Saratoga with an IO-540 engine.
- [Piper PA32 IO 540 K1A5](https://www.blackstone-labs.com/piper-pa32-io-540-k1a5/) - A Blackstone Laboratories oil report from a Piper PA32 with an IO-540 engine.
- [Piper Lance IO 540](https://www.blackstone-labs.com/piper-lance-io-540/) - A Blackstone Laboratories oil report from a Piper Lance with an IO-540 engine.
- [Piper Lance IO 360](https://www.blackstone-labs.com/piper-lance-io-360/) - A Blackstone Laboratories oil report from a Piper Lance with an IO-360 engine.
- [Piper IO 320](https://www.blackstone-labs.com/piper-io-320/) - A Blackstone Laboratories oil report from a Piper with an IO-320 engine.
- [Piper Arrow IO 360](https://www.blackstone-labs.com/piper-arrow-io-360/) - A Blackstone Laboratories oil report from a Piper Arrow with an IO-360 engine.
- [Continental IO 550](https://www.blackstone-labs.com/continental-io-550/) - A Blackstone Laboratories oil report from a Continental IO-550 engine.
- [Commander IO 550](https://www.blackstone-labs.com/commander-io-550/) - A Blackstone Laboratories oil report from a Commander with an IO-550 engine.
- [Cirrus TSIO 550](https://www.blackstone-labs.com/cirrus-tsio-550/) - A Blackstone Laboratories oil report from a Cirrus with a TSIO-550 engine.
- [Cirrus SR22 IO 550 N](https://www.blackstone-labs.com/cirrus-sr22-io-550-n/) - A Blackstone Laboratories oil report from a Cirrus SR22 with an IO-550 engine.
- [Cessna U206F IO 520 F](https://www.blackstone-labs.com/cessna-u206f-io-520-f/) - A Blackstone Laboratories oil report from a Cessna U206F with an IO-520 engine.
- [Cessna SkyHawk IO 360 L2A](https://www.blackstone-labs.com/cessna-skyhawk-io-360-l2a/) - A Blackstone Laboratories oil report from a Cessna SkyHawk with an O-360 engine.
- [Cessna O 300 D](https://www.blackstone-labs.com/cessna-o-300-d/) - A Blackstone Laboratories oil report from a Cessna with an O-300-D engine.
- [Cessna C182 O 470 R25A](https://www.blackstone-labs.com/cessna-c182-o-470-r25a/) - A Blackstone Laboratories oil report from a Cessna 182 with an O-470 engine.
- [Cessna C150 O 200](https://www.blackstone-labs.com/cessna-c150-o-200/) - A Blackstone Laboratories oil report from a Cessna 150 with an O-200 engine.
- [Cessna 421C GTSIO 520](https://www.blackstone-labs.com/cessna-421c-gtsio-520/) - A Blackstone Laboratories oil report from a Cessna 421 with a GTSIO-520 engine.
- [Cessna 172 O 300](https://www.blackstone-labs.com/cessna-172-o-300/) - A Blackstone Laboratories oil report from a Cessna 172 with an O-300 engine.
- [Cessna 152 O 235 L2C](https://www.blackstone-labs.com/cessna-152-o-235-l2c/) - A Blackstone Laboratories oil report from a Cessna 152 an O-235 engine.
- [Cessna 150 O 470 R](https://www.blackstone-labs.com/cessna-150-o-470-r/) - A Blackstone Laboratories oil report from a Cessna 150 with an O-470-R engine.
- [Bellanca O 320 Follow Up](https://www.blackstone-labs.com/bellanca-o-320-follow-up/) - A follow-up oil report from the Bellanca with an O-320 engine.
- [Bellanca O 320](https://www.blackstone-labs.com/bellanca-o-320/) - A Blackstone Laboratories oil report from a Bellanca with an O-320 engine.
- [Beechcraft IO 550](https://www.blackstone-labs.com/beechcraft-io-550/) - A Blackstone Laboratories oil report from a Beechcraft with an IO-550 engine.
- [Beech BE35A IO 520](https://www.blackstone-labs.com/beech-be35a-io-520/) - A Blackstone Laboratories oil report from a Beechcraft with an IO-520 engine.
- [Avions Mudry AEIO 360](https://www.blackstone-labs.com/avions-mudry-aeio-360/) - A Blackstone Laboratories oil report from an Avions Mudry with an AEIO-360 engine.
- [Austro AE300](https://www.blackstone-labs.com/austro-ae300/) - A Blackstone Laboratories oil report from an Austro A300.
- [Cessna T206 TIO 540](https://www.blackstone-labs.com/cessna-t206-tio-540/) - A Blackstone Laboratories oil report from a Cessna T206 with an IO-540 engine.
- [2009 Ford Focus](https://www.blackstone-labs.com/2009-ford-focus/) - A Blackstone Laboratories oil report from a 2006 Ford Focus.
- [Jason C](https://www.blackstone-labs.com/jason-c/) - Before coming to work answering phones and setting up samples at Blackstone, Jason C spent 5 years remodeling spaces for his dad's company. Jason didn't give us a lot to work with for his bio, besides the fact that he speaks Spanish, he's a dog guy, and he's into Anime and Manga. So let's play
- [Cory W.](https://www.blackstone-labs.com/cory-w/) - Have had multiple oil samples tested, and results were always prompt and easy to understand. Recently I lost a copy of results and only realized it less than an hour prior to an appointment to show the truck to a potential buyer, I called and Jason was able to get me a copy with in
- [Ronak P.](https://www.blackstone-labs.com/ronak-p/) - Sweet, thank you very much for the detailed analysis. I appreciate your personal attention and notes, thank you for the congratulations on the new truck. It certainly is a fun zippy truck! I expect y’all don’t hear back often from folks, but I wanted to say thank you for giving that personal touch to the
- [Dan B.](https://www.blackstone-labs.com/dan-b/) - Thank you very much Joe. I mean it, thank you very much. So refreshing to work with a company that responds to emails, gives detailed information. It’s really helpful to me since I don’t know much about this stuff, but I’m trying to learn. And you taking time out of your busy day is really
- [Arthur](https://www.blackstone-labs.com/arthur/) - Arthur was a student worker in the lab at Marion University before joining the lab at Blackstone. When he's not putting his degree to good use, Arthur likes to read (holla Terry Pratchett!), runs a D&D campaign, and tries to wean his cat Blackbeard off people food and cat treats.
- [Ross P.](https://www.blackstone-labs.com/ross-p/) - Just wanted to let you guys know you nailed it! I had low compression and blow-by on two cylinders...
- [Naomi K.](https://www.blackstone-labs.com/naomi-k/) - That's actually REALLY insightful thank you! The amount of stuff in that one report alone is truly wild. I thought the intake leak diagnosis with the last car I tested was impressive, this latest one takes the cake. Coolant and fuel in the oil is one thing, but being able to tell the bearings are
- [Spencer F.](https://www.blackstone-labs.com/spencer-f/) - I have some follow up information on this engine… Blew up around 300 miles after this oil change, after taking apart the engine, it appears the forged pistons were rubbing against the cylinder walls, causing etching, which made compression very weak. Rod bearings were also hot spotted and were not going to last much longer.
- [Ram G.](https://www.blackstone-labs.com/ram-g/) - I am following up on this issue of the higher silicon content from my January oil report for my Jaguar XKR. For a variety of reasons it has taken me until this weekend to check the air filters. Lo and behold both air filters showed signs of damage and wrinkling of the corners, allowing in
- [Gene B.](https://www.blackstone-labs.com/gene-b/) - I cannot praise enough the invaluable information provided by BLACKSTONE Lab in each and every oil analyses performed. I have discussed this with you on multiple occasions re: my Jasper replacement on my 01 Grand Cherokee 4.0L. A Jasper installed Feb 2022 with 152k and as of 3/13/24 under 30k on this reman 4.0. I
- [Rune V.](https://www.blackstone-labs.com/rune-v/) - That was impressive! Attached is a video of the alternate air door. It was found during maintenance, but for it to show up on an oil sample was not what I expected. Great work! IMG_8077
- [Michael C.](https://www.blackstone-labs.com/michael-c/) - Just want to thank you. After I received my last terrible report I tore down the top end of the engine and found both pistons had seized in the cylinders at some point between oil changes. I believe this report saved me a ton of money. The bottom end of the engine was fine but
- [Greg B.](https://www.blackstone-labs.com/greg-b/) - You guys have been great to work with as a first time airplane owner. Thank you very much for the report.
- [Isaac A.](https://www.blackstone-labs.com/isaac-a/) - The report on the Kohler engine was spot on. The oil was probably 3 or 4 years old in that mower, but the hours on that oil was probably 100-150 at best. The air filter had also been neglected and was saturated with dirt, so it has been replaced.
- [Ben W.](https://www.blackstone-labs.com/ben-w/) - I just wanted to say a big big, thank you and express my gratitude to you and your team. We had all those emails about the Nickel content in the engine getting high and backwards and forwards with the engine overhaul is about the nickel, plated cylinders etc etc… And you guys were spot on
- [Terry T.](https://www.blackstone-labs.com/terry-t/) - Great catch, you are exactly correct… the weather had been rainy and cold, and the first halfway decent day (no rain, but cold temp), I took the car to get the oil changed at the dealer (15 minutes away) … to get the water temp to 185, and oil up into the mid triple digits,
- [Shawn H.](https://www.blackstone-labs.com/shawn-h/) - I appreciate your oil analysis, but your write up is even better. I shared it with my wife and she loved it. This is our 3rd trawler, hence the name Trilogy. Your awareness and creativity is fabulous and spot on! A huge kudos to whoever does the writeup. It made our evening! Who knew a
- [Bert B.](https://www.blackstone-labs.com/bert-b/) - I was convinced my engine had spun a bearing because of the repetitive sound of something spinning, then it froze up. But since your report showed very little metal in the oil, I decided to keep looking. Turns out, the starter gear got stuck and was still engaged with the flywheel gear while the engine
- [Scotty G.](https://www.blackstone-labs.com/scotty-g/) - Hey! Just wanted to share my findings. When I received this email I decided to pull the motor and tear it down. What I found was that in one of the cylinders the piston skirt was wearing pretty bad against the cylinder wall. That would explain why the high aluminum (piston skirt), high iron (sleeve
- [Aidan S.](https://www.blackstone-labs.com/aidan-s/) - What a sigh of relief! This made my day! Thank you guys very much, I seriously appreciate the comfort in knowing my engine is wearing properly after all the care my Grandfather and I have put into it. P.S. Slick talk is sweet! Checked it out and it’s right up my alley!
- [Tom C.](https://www.blackstone-labs.com/tom-c/) - Just wanted to send you a follow up on this last oil report. As you showed the iron had taken a sudden jump from where it was tracking. We brought the truck in and went through the top end. After opening it up we found the very beginnings of the cam and lifter failing. I
- [Tony W.](https://www.blackstone-labs.com/tony-w/) - Please find attached evidence of cam follower failures in our IO540 at at 350 hours following a complete rebuild. The damage was caused by failure of the diamond coating on some cam followers. If we had been regularly sampling these defects could have been detected earlier and possibly the consequently piston damage could have been
- [Steve K.](https://www.blackstone-labs.com/steve-k/) - Thank you for all of the work you put into analyzing these samples. I really appreciate that you take the time to send me comments on my samples and provide insight into potential problems. This service you provide is invaluable for schmucks like me that like to drive old trucks everyday.
- [Chip L.](https://www.blackstone-labs.com/chip-l/) - Your kit may have prevented and engine failure and/or subsequent loss of aircraft or life. Your folks found a small amount of silver in a sample we sent. Subsequent examination found small silver flakes in our oil filter that may have come from the master rod bearings. Out of an abundance of caution we replaced
- [Larry P.](https://www.blackstone-labs.com/larry-p/) - You all are unbelievable. I went to an HPDE in Wisconsin at Road America. It took me two days to find a source of 93 octane fuel. Apparently Wisconsin uses 91 octane as their hi test fuel. To make up for that, I had to mix leaded race fuel with 91 octane in hopes of
- [Mike B.](https://www.blackstone-labs.com/mike-b/) - I had my Rover on oil analysis and the first guy that actually knew what those reports said, bought the truck at the full asking price. : )
- [Winston S.](https://www.blackstone-labs.com/winston-s/) - I emailed a question to you folks yesterday and got a detailed answer today! I can’t tell you how refreshing that kind of service is. After receiving my reply I took a moment to check out your website. Most impressive! and I spent an hour or more reading different sections. When I came to the
- [James M.](https://www.blackstone-labs.com/james-m/) - I want to thank Blackstone for probably saving my engine in my beloved Xterra. I had my timing chains done and had the oil analyzed at the first oil change. As a result of your analysis an issue with the parts was uncovered and turned out to be a defective or improperly installed timing chain
- [Brian R.](https://www.blackstone-labs.com/brian-r/) - I sold my 2014 Jeep Grand Cherokee diesel for $5,000 more than Kelly Blue Book. The guy who bought it said he was impressed by all the oil analyses and transmission fluid reports I had from Blackstone, and that that’s why he paid me my asking price because he doubted he would find a well
- [Jong W.](https://www.blackstone-labs.com/jong-w/) - Best news I’ve heard after a horrible week! I was worried due to the little froth of metals on my magnetic drain plug at my last few oil changes.
- [Chris O.](https://www.blackstone-labs.com/chris-o/) - My plane’s most recent oil sample was sent a couple weeks ago. Before that analysis was processed, we tore down the top of the motor to replace what we suspected were high-time, worn cylinders. My oil analysis on that last oil change arrived in my email today, and while you had no idea we were
- [Matthew J.](https://www.blackstone-labs.com/matthew-j/) - Wow, best news I’ve heard all year! Thanks!
- [Harry T.](https://www.blackstone-labs.com/harry-t/) - You guys were totally right. I accidentally put down 0W40 when in reality this is a 0W/20.
- [Rick B.](https://www.blackstone-labs.com/rick-b/) - I am amazed! You all are the best. Yup, you caught the fact that the pushrod tube gaskets were changed on both due to some leakage. Also, the front engine I had just replaced #3 and #5 cylinders after overhaul due to cracked valves. Thank you again and keep up the stellar work.
- [Larry A.](https://www.blackstone-labs.com/larry-a/) - Wanted to thank you. I sent in for an oil analysis because I’d been having some overheating problems, yet did not see any obvious oil in the radiator or coolant on the dipstick. I was in year four of a five-year warranty and the report showed coolant in the engine oil. Also in the report
- [James T.](https://www.blackstone-labs.com/james-t/) - I really appreciate your personable replies attached to my reports. Puts results in perfectly understandable form. This transmission is the most difficult to drive without using the clutch that I’ve ever had. Truck is quiet so one doesn’t hear the engine. Thanks.
- [Steve Z.](https://www.blackstone-labs.com/steve-z/) - Have I thanked you recently for the service you provide? Well, let me thank you now: you folks are great , and a comfort to those of us who trust our lives to our aircraft engines.
- [Paul B.](https://www.blackstone-labs.com/paul-b/) - Wow – you still had on file the results of my skid steer’s sample from 2003?! I am impressed and grateful. Thanks! I will change the oil as you suggest.
- [Michelle M.](https://www.blackstone-labs.com/michelle-m-2/) - Many thanks for the oil analysis. You were right about the spike in silicon! Yes, the poor air filter had suffered a backfire during the engine start. The backfire evidently occurred since the last oil change. The heat warped the air filter, allowing dirt in and depositing goo in the air duct. We just got
- [James K.](https://www.blackstone-labs.com/james-k/) - This report makes me so HAPPY! Particularly on a rough Friday afternoon. Thank you guys SO MUCH!
- [Al S.](https://www.blackstone-labs.com/al-s/) - Your analysis is spot on! Both engines had been sitting for a very long time in a salt water environment. Heads were pulled and cylinders were ball honed with pistons at BDC and sealed with a rubber plug to prevent abrasive from reaching rings. Cylinders were cleaned with purple cleaner and rinsed. A bearing cap
- [Eric V.](https://www.blackstone-labs.com/eric-v/) - Thank you very much for the reports! In the Focus report, it was noted that the silicon value was high. The sample was taken on July 4, 2018. In October 2017, as I was installing new spark plugs, I discovered a head gasket seal leak. I replaced the head gasket and had to also redo
- [David S.](https://www.blackstone-labs.com/david-s/) - Thank you for your quick analysis!!! I have used your services for decades and you have been very consistent with my airplanes and boats. I recommend you any chance I get and encourage establishing on ongoing analysis as opposed to a snapshot. I anticipate using your services in the future, but the machinery has yet
- [Walter G.](https://www.blackstone-labs.com/walter-g/) - I had a mechanic who, although he is highly regarded as a premier Subaru expert, is human and misdiagnosed my engine. He told me the engine was shot, and that I should sell my car for parts rather than investing money in repairing. While he did have strong evidence (failed compression test, knocking noise, etc.)
- [Nick K.](https://www.blackstone-labs.com/nick-k/) - You guys are awesome. Back in 2017 I had analysis done on our Hyundai sonata and you noted excessive iron in it. Now after the major recall and issues from Hyundai on metal not being cleaned out properly from the factory it all makes sense after a larger chunk of the lose metal finally lodged
- [Nick V.](https://www.blackstone-labs.com/nick-v/) - Thanks so much guys! This just inspired so much confidence about my car. 30 years and 173k miles is a lot, and it’s so good to know the engine is in such good shape. I’m 18 and this is my first project car, I’m excited for many more miles to come!
- [Ross R.](https://www.blackstone-labs.com/ross-r/) - Thanks for taking the time to explain wear rates in terms of per hour basis. That really helped as did explaining the DC-4 “smoking gun” for my high silicon rates. I should have called about that years ago! Thanks for being a great tool in my tool box for monitoring engine health along with annual
- [Zoltan Z.](https://www.blackstone-labs.com/zoltan-z/) - I just wanted to drop a thank you note for the work you do. Thanks to you I don’t have to be afraid to keep using the suburban due to the noise. Based on some youtube videos, I thought I had some mechanical issues where tearing the top end of the engine apart was the
- [David G.](https://www.blackstone-labs.com/david-g/) - Thank you, thank you, thank you. My 86 Olds Calais with 2.5 four cylinder has been saved by your oil analyses that discovered coolant in the oil. There was no overheating, milkshake in the oil, no external leaks or water vapor coming from the exhaust. Just loss of coolant over a period of time. Because of
- [Jenelle S.](https://www.blackstone-labs.com/jenelle-s/) - By the way, after your test showing water in the engine, the dealer tested the oil at the shop with only 30 miles on the oil and it still showed contamination from antifreeze. We don’t use this truck much anymore — if not for the oil sample, we would’ve gone out of warranty before we
- [John W.](https://www.blackstone-labs.com/john-w/) - Thank you guys! You don’t know how relieved I am that I don’t have to dig into the lower end. Thank you thank you! What a waste of time that would have been. Now I just need to go hunting. Probably water pump or timing belt. You guys are awesome and I’ll keep sending samples
- [W.D.B. GySgt (USMC (Ret.))](https://www.blackstone-labs.com/w-d-b-gysgt-usmc-ret/) - Good morning my beloved nerd-powered, hard-charging, dedicated & motivated Blackstone “Lab Geeks”! Say no more fam! I’m a recently retired United States Marine Gunnery Sergeant. Did my 21 years for the Country & Corps, and fought in three ground-combat tours both in Fallujah, Iraq, and Sangin, Afghanistan! I absolutely LOVE dealing with professionals like You
- [Jeremy V.](https://www.blackstone-labs.com/jeremy-v/) - Having this information both saves our family money in oil and transmission changes AND saves me sleepless nights worrying about what might be happening in our engines. I recommend you to everyone I know who drives a vehicle that’s worth taking care of. Happy Spring and have a great week!
- [Derrick D.](https://www.blackstone-labs.com/derrick-d/) - I’d like to update you all on my 01 Mustang Bullitt. The lab technician stated I had very high levels of aluminum and other metals in the engine. He even took the time to call me with his concerns and provided a more detailed analysis along with suggestions based on your oil database. At this
- [Brandi M.](https://www.blackstone-labs.com/brandi-m/) - Thank you for your outstanding oil analysis. Once again, you predicted engine failure. As devastating as this past week has been, your oil analysis led me to my tuner who discovered my engine was in the beginning stages of failure. Within 3 days, my car was at a local shop getting its engine pulled, then
- [Scott Y.](https://www.blackstone-labs.com/scott-y/) - Hello Blackstone Labs! Just wanted to say thank you for the excellent service you provide. I have just received the readout on my second oil change and first diff/transmission flush on my 2013 G37 coupe. The info that you folks provide has helped me to navigate the maintenance schedule on my car, and I feel much
- [Stef K.](https://www.blackstone-labs.com/stef-k/) - Thank you!!! I have been happy with everything you’ve done for us over the years but you went above and beyond on this one. I received a call from Joe (I think I remember his name correctly) telling me the paperwork hadn’t been filled out and would I be able to give him info on the
- [Greg E.](https://www.blackstone-labs.com/greg-e/) - Thanks to the oil analysis before this one I was able to detect 3 bad exhaust valves and a broken piston ring and had the 3 cylinders overhauled. The plane was flying great so if it wasn’t for the oil analysis I would not have known anything was wrong until it could have been a
- [Robert S.](https://www.blackstone-labs.com/robert-s/) - I have been using your company for a few years and greatly appreciate your services. Your reports help me monitor my collection of military vehicles and the truck I use daily. I find your comments on the reports very informative and easy to understand. So far your company has helped me save money in my
- [Dan S.](https://www.blackstone-labs.com/dan-s/) - Hi, This is my first oil report ever with you guys (well, ever, ever). I’ve read sample reports posted online, but the feeling I had reading words from a human about my sample was, just, unexpectedly awesome. I dunno why, but it just was. Anyway, I just wanted to say thanks for being awesome. Also,
- [Dave M.](https://www.blackstone-labs.com/dave-m/) - Thank you for sending that report again. I like your service and am glad I found you guys. I have severe ptsd which means I’m paranoid and my truck is my baby. I try to keep it in tip top condition and never intend to sell it. Hopefully I will pass this amazing machine onto
- [Charles J.](https://www.blackstone-labs.com/charles-j/) - Wow that was awesome! I called the phone number, I got a PERSON not a computer, and that person was able to not only help me, but I got what I asked for via email within 30 seconds of asking. That’s customer service!
- [George W.](https://www.blackstone-labs.com/george-w/) - The service that you perform is a most anticipated report that I look forward to yearly. As an owner of a 30 year old classic car that I drive the %$#&^ out of, it’s always good to get your report. Kinda like a yearly check-up – am I going to live, what’s wrong, how much
- [Gordon P.](https://www.blackstone-labs.com/gordon-p/) - Thank you for the report. Look like I am ready for a transmission rebuild. Probably will wait until we get ready to leave for the winter. You guys are a great help. Highly recommend you to my diesel truck friends.
- [Anthony A.](https://www.blackstone-labs.com/anthony-a/) - You guys were dead on. A day before the trackday I did a boost leak test and since my methanol controller is boost actuated it triggered the pump and dumped quite a bit of methanol into the intercooler. So the car ran rich for about 5 minutes until it burnt off. Thank you guys again!
- [Royce W.](https://www.blackstone-labs.com/royce-w/) - I wanted to say thank you for your prompt testing of the samples I recently sent in. I actually pulled the samples for a friend that is contemplating buying a boat and this helped him make an informed decision. You noted the difference between the two engines. Well you hit the nail on the head
- [The G. Famliy](https://www.blackstone-labs.com/the-g-famliy/) - I just wanted to thank you again for rushing the oil analysis on our 450 ISM Cummins engine. We brought our motorhome into a cummins shop and discovered we had a cracked cylinder head. Your analysis is what convinced the Cummins folks to dig deeper. They had told us for 2 years there was perhaps
- [Don L.](https://www.blackstone-labs.com/don-l/) - In 2009, I purchased a new Ford F-250 pickup as a company vehicle. I change the oil regularly and periodically send a sample in. Several weeks ago, I traded that vehicle in, which had 175,000 miles on it, and took a copy of the latest results with me. The sales manager initially said they do
- [Chris R.](https://www.blackstone-labs.com/chris-r/) - Greetings Blackstone Team, This aircraft had the induction filter blow out of position during a start up, and continued for one flight that way. We suspect that this is where the high silicone came from. It’s a great confidence builder in your service that such a limited event can be seen in the analysis. Thanks
- [Brian L.](https://www.blackstone-labs.com/brian-l/) - The oil analysis on the AEIO-360-B2F engine in my aircraft showed high levels of aluminum, iron, and chromium. I went back and pulled the oil screen again. We did find some ferrous metal that I had at first taken to be carbon. We found enough to suspect the camshaft so I opted to pull a
- [Butch F.](https://www.blackstone-labs.com/butch-f/) - Dear Blackstone Staff, Thanks for the analysis. for once I don’t have any questions. At dealer prices, for every 10K I can extend the transmission service I save about 70 dollars. I think I am going for 60K next time. Thanks again.
- [Jeremy B.](https://www.blackstone-labs.com/jeremy-b/) - That was fast (especially since I included a long-winded description with the samples!). Anyway, I’m very glad I discovered your lab (via reading the ever-contentious ‘Bob the Oil Guy’ forums)….I especially appreciate the friendly, but crystal clear explanation of the results. Something that I didn’t get from my previous lab (without pulling teeth, anyway). Its
- [Kevin N.](https://www.blackstone-labs.com/kevin-n/) - This is my first experience with you guys, and I’m thoroughly impressed! The reports were great. Your question regarding the higher copper content found in the Port side was right on the money, this was the first sample taken of the two and an older Jabsco dipstick pump was used to take the sample. I
- [James L.](https://www.blackstone-labs.com/james-l/) - I just wanted to say “Thanks” for the fast service and the comprehensive reporting. I also wanted to let you know that I believe your assessment (reading between the lines) is correct – this motor needs to be pulled and checked. I do not trust the condition of the bearings and yeah, there was more
- [Michelle M.](https://www.blackstone-labs.com/michelle-m/) - Thanks for the prompt analysis of my Mooney’s oil! I was so glad everything looked OK. The winter was so frigid that we didn’t fly much, so I was afraid both the airplane’s oil and my arteries were full of sludge. We just came back from maintenance with 8 new spark plugs (4 fine wire
- [Austin D.](https://www.blackstone-labs.com/austin-d/) - Blackstone team, thought you would be interested to know the following: the origin of the 200% increase in nickel was valve related. Your suggestion to check compressions and possibly borescope were right on! Five cylinders, seventy plus, and #6 was (almost) twenty lbs. Didn’t need to borescope to find the problem child. After removal of
- [Daniel L.](https://www.blackstone-labs.com/daniel-l/) - You guys provided advanced warning and insight about bearing material wear on my old car, four years before bearing-related oil pressure issue became noticeable. Keep up the good work : )
- [Dennis M.](https://www.blackstone-labs.com/dennis-m-2/) - The last report showed a large increase in titanium! Pulled the heads and popped a valve spring to find intake valve ready fall out. All 16 had hard wear due to faulty valve guides. Better the way then out on the road at speed. And GMPP could not argue, paid full repairs, $7k thank God
- [William C.](https://www.blackstone-labs.com/william-c/) - I just wanted to thank the team at blackstone labs. I feel much better about my bike after seeing the report and thank you for the comments makes me actually feel very appreciated. I will send all my oil to yall. Customer for life thanks.
- [Ashley H.](https://www.blackstone-labs.com/ashley-h/) - Ryan & Blackstone employees, I would just like to thank you from the bottom of my heart for all your help. If it were not for you I would have had to pay $7,000 for a new transmission in my 2010 car that I have not even had for a year. The shop was trying
- [Chris M.](https://www.blackstone-labs.com/chris-m/) - Hi guys –I forgot to get back to you 18 months ago after my first analysis. You sent me a report for the Toyota WS fluid in my dad’s RAV4, which had reached the end of its useful life. I had a shop change the filter & fluid. The felt-like filter medium had actually started
- [Luciano C.](https://www.blackstone-labs.com/luciano-c/) - Thanks for handling with such a fast feedback. So I kind of expected higher silicon levels because I ride dusty roads lately. It shows not that high tough. As you said, light vis doesn't hurt that bad eh? Well, I think its about time to try a heavier like 15w40. See you soon. Keep up
- [Max](https://www.blackstone-labs.com/max/) - My car has been off the road and the track since I received the analysis on my M3 that showed high levels of copper in the oil. I’ve attached a picture of one of the bearings (actually two were “in the copper”) and truly believe that had I not gotten the early warning from my
- [Hib H.](https://www.blackstone-labs.com/hib-h/) - I’ve worked with several other labs and I love you guys and how you write reports. Becoming a big Blackstone fan.
- [Dennis M.](https://www.blackstone-labs.com/dennis-m/) - You guys are awesome, will be sending more samples as the engine gets more mileage. The exhaust valves are titanium and the guides failed. I want you to help me publish this data for all the Corvette owners so they can get this done. I had 5,000 miles after you saw how high titanium is
- [Eric B.](https://www.blackstone-labs.com/eric-b/) - Thanks for the good reports on these aircraft. It sure is nice to have the comment portion of these reports, it gives me something to show the customer rather just having numbers to show them. You guys get my vote (and business) for your informative reports that show more than just numbers.
- [Janna W.](https://www.blackstone-labs.com/janna-w/) - Thank you so much. I’m so relieved they didn’t ruin my awesome car! You made my day!
- [Steve](https://www.blackstone-labs.com/steve/) - Hello, I wanted to tell you about my 1973 searay you did an analysis on. I had the engine replaced. When I had some time I took apart the block and found cylinder 4 had one 2 inch vertical crack on the cylinder wall. It was an open system so I could not see any water
- [Richard T.](https://www.blackstone-labs.com/richard-t/) - Thanks for your quick response. It’s nice to know that the engine is one less thing to worry about.
- [Jim O.](https://www.blackstone-labs.com/jim-o/) - I’m loving the confidence that doing the oil analysis gives that I’m not changing oil too soon. I put a lot of money down the drain in the past. Thank you for the help!
- [J.](https://www.blackstone-labs.com/j/) - Thank you so much for the prompt response. I don’t use the vessel as much as I would like but I will continue to send in samples each year regardless. I’ll send another sample just before I lay it up for the winter, sometime in November. Thanks again and I look forward to working with
- [Jon L.](https://www.blackstone-labs.com/jon-l/) - This is great. I have been suspecting fuel for a while now. I might consider changing the fuel pressure regulator and getting new injectors and probably swap in a new o2 at that point.
- [Mike S.](https://www.blackstone-labs.com/mike-s/) - Blackstone team, I just wanted to say thank you for offering this service (and for offering it at a reasonable price!). I feel like my kid received good grades on his report card. I will be sending you another sample next summer. Thanks again
- [Paul P.](https://www.blackstone-labs.com/paul-p/) - I’ve been sending you samples for five years. This report was the first one that spotted trouble. Sure enough, your diagnosis was spot on! It was a leaky intake gasket that was the most likely culprit, also causing the engine trouble light to come on. It seems the problem’s been cured. Should I change the
- [Rod Z.](https://www.blackstone-labs.com/rod-z/) - Had to overhaul my 06 Columbia Freightliner. Thank goodness I took a one year warranty on it! Your samples provided the needed information that something was wrong with the motor. Had a leaking head gasket and two or three of the cylinder liners were leaking as well. Thanks for the good work.
- [Ethan](https://www.blackstone-labs.com/ethan/) - Before joining Blackstone Ethan worked with animals in Australia, but relocated to marry his true love. He's survived encounters with man-eating sharks, deadly spiders, venomous snakes, something called a "stinging tree," and a malevolent seagull who stole all his chips. Since moving, he enjoys great barbeque, great lakes, and free coffee refills.
- [Augustia](https://www.blackstone-labs.com/augustia/) - Augustia holds a Bachelor of Arts in theatre performance and writing. She spent a couple years after graduation hopping around between food service jobs and the occasional seasonal position before finally landing the coveted Industry Job here at Blackstone. When she's not writing your report comments, you may find her jamming out to Hozier and
- [Sarah A](https://www.blackstone-labs.com/sarah-a/) - Sarah is a former library clerk who was excommunicated from the Allen County Public Library for spending too many of her working hours sniffing old copies of the Beckett Anthologies. A native of Warsaw, IN, she’s fluent in Pig Latin and Klingon, and she spends her spare time rolling in the dirt with her unathletic
- [Jim Stark](https://www.blackstone-labs.com/jim/) - Jim Stark passed away peacefully at his home in Ossian, Indiana on Nov. 20, 2015. He was 73. Jim was an inventor, entrepreneur, pilot, musician, writer, workshop tinkerer, mechanic, and an all-around interesting guy. He enjoyed happy hour (three-beer limit unless scotch was available), playing guitar and the ukulele, traveling and camping with his wife Kathy,
- [Kristin](https://www.blackstone-labs.com/kristin/) - Kristin deviated from the family flock by attending Indiana University, earning an English degree. She worked as an editor and writer in Colorado and Michigan before the siren call of Blackstone brought her back to Indiana. Kristin started at Blackstone in 2002 and has since learned to love the intoxicating world of oil analysis. When she’s
- [Erik](https://www.blackstone-labs.com/erik/) - Erik took to Blackstone like a Labrador takes to the water. Erik spends his days in the lab improving processes, setting up new machines, and building things. When he’s not doing his yearly bluegrass thing at Skunk Fest in South Carolina, Erik has been known to spend his free time tearing apart engines and fixing up
- [Amanda](https://www.blackstone-labs.com/amanda/) - Amanda is a senior analyst. She is also an instrument-rated private pilot working on her flight instructor certification, a certified steak competition judge, crews on a hot air balloon team, plays the bassoon, and, according to her Spotify account, listens to more Beatles music than 99% of other Spotify users. Having grown up in Wisconsin,
- [Travis](https://www.blackstone-labs.com/travis/) - Travis is a man of many talents. Not only is he a coder and word-crafter of the highest order, he can take apart and reassemble engines and transmissions with ease. When he’s not coding or talking engines with Blackstone’s clientele, Travis has been known to restart hearts and rescue accident victims as an EMT, which makes
- [Samir](https://www.blackstone-labs.com/samir/) - We have never known anyone who could supply Marines in the desert with water, but that’s exactly what Samir did during his time stationed in Iraq as a Marine. A Gulf War veteran, Sgt. Kharbas is also a computer crackerjack, mechanic, father, and oil analysis guru. Having worked on cars for years, Samir puts his mechanical expertise
- [Luke](https://www.blackstone-labs.com/luke/) - Luke is our senior-analyst-turned quality control manager, motorcycle mechanic, and all around great guy. Despite the picture, he doesn't always transport children in a wheelbarrow. That alone is all you really need to know about him, but wait, there’s more! In his free time Luke trains Arabian horses, consults with foreign dignitaries on the value of
- [Cathy](https://www.blackstone-labs.com/cathy/) - When she’s not shopping with her daughter or spending time with her husband and son, Cathy enjoys spending time with and walking her dogs. She also goes to the occasional car show, which makes her fit right in at a place like Blackstone. Cathy helps manage our sample flow, answers phones, and is a crackerjack on data
- [Justin](https://www.blackstone-labs.com/justin/) - Lab Manager Justin is truly a jack of all trades. When he’s not working in the lab, he’s busy raising his kid with his wife, working on his Dodge D150 truck, and building computers. We’ll add that someone in this lab is known for dumpster diving in his spare time, but we’re not going to
- [Brian](https://www.blackstone-labs.com/brian/) - Although his picture features a machete, senior analyst Brian is possibly the most laid-back person analyst Blackstone has ever hired. When he’s not writing up your reports, Brian can be found visiting national parks, playing his French horn in a community orchestra, jogging around the Summit City, and vociferously supporting the local minor league sports
- [Raegan](https://www.blackstone-labs.com/raegan/) - Raegan was a biology major and spent graduate school concentrating on microbiology and biochemistry, so she loves all things science. But she enjoys spending time in the great outdoors doing things like backpacking, kayaking, and camping, which is handy because she relocated from Indiana to California, where mountains and water are plentiful, and now works
- [Jason](https://www.blackstone-labs.com/jason/) - Jason is a sports guy – football, basketball, baseball — you name it and he’s coached it, mainly for teams his son plays on. Although he was born here, he grew up in Tallahassee before returning to the Midwest to enjoy fishing and cheering on the Fighting Irish. We’re not sure how we managed to
- [Mary](https://www.blackstone-labs.com/mary/) - When she’s not sorting and setting up your samples, Mary likes to travel — mainly to see her sons and mom who are scattered throughout the Midwest. She stays fit doing yoga and pilates, as well as walking her dog, preferably in the summertime. The hotter the weather the better for Mary, who can sometimes
- [Joe](https://www.blackstone-labs.com/joe/) - Joe studied Communication and Culture at Indiana University, and he’s put that education to good use as a senior analyst, podcast producer, social media manager, and all around oil guru at Blackstone. Between penning oil reports, recording episodes of Slick Talk, and crafting social media posts Joe is always trying to find new ways to
- [Anna](https://www.blackstone-labs.com/anna/) - Anna is our master analyst, which means she creates and trains all new analysts who pass through the halllowed doors at Blackstone. When she’s not training up newbies, handling many of our bookkeeping needs, and writing reports, she enjoys listening to podcasts, trying to relearn all the French she forgot from high school and college,
- [Eric S](https://www.blackstone-labs.com/eric/) - Eric started in the receiving area but has evolved into an all-around building maintenance manager and helps us with all kinds of projects, like building more racks and renovating buildings. Eric might look intimidating, like he's could kick your butt; in reality, he lifts weights and actually could kick your butt but he probably wouldn't
- [Lydia](https://www.blackstone-labs.com/lydia/) - Lydia studied English and worked as a videographer for several years before joining Blackstone to work in the lab. When she’s not running oil samples she enjoys traveling, spending time with loved ones, working on the family farm, camping, hiking, cooking lots of new recipes (ever try strawberry lemonade pancakes?), and updating an Excel sheet
- [Kenny](https://www.blackstone-labs.com/kenny/) - When he’s not lifting test tubes in the lab, Kenny can be found lifting weights at the gym. He also likes spending time in the great outdoors, fishing on Lake Wawasee, and kayaking on Cedar Creek.
- [Ashlee](https://www.blackstone-labs.com/ashlee/) - When your kits arrive, you have Ashlee to thank. A kit builder extraordinaire, Ashlee also knows how to do many things at Blackstone - she can unpack samples, fix weird printing problems, and enter your info into the computer. Don’t get on her bad side, is what we’re saying. Just kidding, Ashlee doesn’t have a
- [Arryn](https://www.blackstone-labs.com/arryn/) - Arryn went to school at the AFI Conservatory, becoming the first of her family to obtain a master’s degree. After graduation, she returned home and took up her oldest habits: keeping her dog away from the cat’s food and “discovering” decades-old popular video games. When she’s not working on scripts or analyzing what’s going on
- [Christi](https://www.blackstone-labs.com/christi/) - Christi graduated with a BS and a Kindergarten Endorsement in Education. She taught in the Fort Wayne Community Schools district for 18 years before coming to Blackstone to build kits, help in receiving, and assist with data entry. In the summer, she enjoys traveling, hiking, camping, and fishing with her husband and three kids. To
- [Chris](https://www.blackstone-labs.com/chris/) - Chris is a small-town green bean farmer. He’s also a Grace College alum, where he earned his Bachelor’s of English. Before becoming an analyst at Blackstone, he worked as a newspaper reporter and a bartender. He’s an Eagle Scout for life. He’s deathly allergic to gluten. His love for motor oil started at a young
- [Luke V](https://www.blackstone-labs.com/luke-v/) - We conduct a lot of tests here at Blackstone, but none have helped us determine if Luke is as young as he claims to be. When he’s off the clock, Luke can be found watching decades-old movie franchises, dusting off the cartridges for his Nintendo 64, or rocking out to some heavy metal. That guy in the
- [Nick](https://www.blackstone-labs.com/nick/) - Before joining Blackstone as an analyst, Nick studied 3D Modeling and Animation at IPFW, then taught the subject for five years after graduation. He is an introvert who fluctuates between the mediator and adventurer personality types. Outside of work, Nick enjoys spending time with his wife and son, playing tabletop or video games, watching films,

## Pages

- [Blackstone Laboratories Home](https://www.blackstone-labs.com/) - Learn what's going on in your engine with oil analysis. Our free kits are easy to use and we explain the results in plain English! Since 1985.
- [About Oil Analysis](https://www.blackstone-labs.com/about-oil-analysis/) - Oil analysis is a quick way to determine the condition of an engine, transmission, or gear box by looking at what's in the oil.
- [Interesting Reports](https://www.blackstone-labs.com/interesting-reports/) - These are some of the interesting reports from gas and diesel engines, aircraft engines, transmissions, and more that we've done over the years.
- [Knowledge Base](https://www.blackstone-labs.com/knowledge-base/) - What's the best oil? When should I change my oil? Is my oil contaminated? Read on to answer these questions, see interesting oil reports, and more in our blog.
- [Tests & Price List](https://www.blackstone-labs.com/tests-price-list/) - A comprehensive list of the more specialized tests we run. Any of these tests can be combined with the standard analysis. Call for more information.
- [How to read Your Oil Report](https://www.blackstone-labs.com/how-to-read-your-oil-report/) - The data in your oil analysis report can be hard to understand. These explanations make it easy to see what's going on in your engine.
- [How it Works](https://www.blackstone-labs.com/how-it-works/) - New to oil analysis? Oil sampling is easy with Blackstone. Get a kit, take a sample, send it in and get results via email! Sampling kits are always free.
- [Oil Slips](https://www.blackstone-labs.com/oil-slips/) - Need an oil slip to send with your sample? These forms can be filled out and saved to your phone or computer. Any form can be used for any sample.
- [FAQs](https://www.blackstone-labs.com/faqs/) - Answers to all your questions, plus those you didn't even think to ask, in one handy list! Ok maybe not "Why are we here," but we cover most everything else.
- [Cookie Policy](https://www.blackstone-labs.com/cookie-policy/) - This page provides comprehensive information about how we use cookies on our website to enhance your browsing experience, improve website performance, and deliver personalized content. Cookies are small text files that are stored on your device when you visit our site. They help us understand how visitors interact with our website, allowing us to offer
- [Products](https://www.blackstone-labs.com/products/) - Pay for oil, fuel, and coolant samples here. No login or account needed. Need a kit too? Make a note when you submit your payment.
- [Standard Oil Testing](https://www.blackstone-labs.com/standard-oil-testing/) - Our standard analysis is all most people need. It looks at wear metals, additives, fuel, antifreeze, solids, viscosity, and air & oil filtration. Kits are free!
- [Fuel & Coolant Testing](https://www.blackstone-labs.com/fuel-coolant-testing/) - Use gasoline, diesel fuel, or coolant testing to find moisture, solids, and contaminants that shouldn't be there. Special kit required for transit for fuels.
- [Industrial & Off-Highway Reports](https://www.blackstone-labs.com/industrial-off-highway-reports/) - Use oil analysis to determine the oil change interval on gear boxes, hydraulic systems, presses, off-highway equipment, and more. Waste oil? We do it!
- [Privacy Policy/Terms of Use](https://www.blackstone-labs.com/privacy-policy-terms-of-use/) - At Blackstone, your information is private. We will never sell your information to anyone - not ever. Read on to learn more about our terms of use.
- [SMS Privacy Policy](https://www.blackstone-labs.com/sms-privacy-policy/) - SMS Privacy Policy Want reports and updates via text, but hate spam? We do too. (coming soon!)We take your privacy seriously. By opting into our SMS services, you agree to this Privacy Policy and the terms outlined below, which are in compliance with the latest regulations under the Telephone Consumer Protection Act (TCPA) and the
- [Invoice Payment](https://www.blackstone-labs.com/invoice-payment/) - Invoice payment This form is only for paying an invoice we sent you. Name(Required) First Last Business Name Address(Required) Street Address Address Line 2 City State / Province / Region ZIP / Postal Code AfghanistanAlbaniaAlgeriaAmerican SamoaAndorraAngolaAnguillaAntarcticaAntigua and BarbudaArgentinaArmeniaArubaAustraliaAustriaAzerbaijanBahamasBahrainBangladeshBarbadosBelarusBelgiumBelizeBeninBermudaBhutanBoliviaBonaire, Sint Eustatius and SabaBosnia and HerzegovinaBotswanaBouvet IslandBrazilBritish Indian Ocean TerritoryBrunei DarussalamBulgariaBurkina FasoBurundiCabo VerdeCambodiaCameroonCanadaCayman IslandsCentral African RepublicChadChileChinaChristmas IslandCocos
- [Sample Reports](https://www.blackstone-labs.com/sample-reports/) - Sample Reports If it’s oil, we test it! Click on any engine type below to see sample reports. Gasoline Which oil is best? Is synthetic oil better? How often should you change it? Oil analysis answers these questions and more. gasoline reports Diesel Is coolant or fuel in the oil? What about excess soot? Oil
- [Links/Resources](https://www.blackstone-labs.com/links-resources/) - Links/Resources Auto & RV BobIsTheOilGuyCorvette LinksKerma TDINASIOCRV ResourcesPPI Inspection ServiceRV WebVehicle Inspection Services Diesel Checkfluid Diagnostics (Sampling Valves)Fumoto ValveKleenoil FiltrationBobIsTheOilGuyFord-TrucksHistory of the Pick-Up TruckThe Diesel PlaceThe Truck StopTurbo Diesel Register Aircraft Airwolf Filter Corp.AVwebCardinal FlyersCessna Pilots AssociationEAAFAA WebsiteWomen in Aviation Motorcycle AMA Pro RacingSportbike Track Time
- [Slick Talk Podcast](https://www.blackstone-labs.com/slick-talk-podcast/) - Spend some time with Blackstone Joe learning about oil and engines. Interviews and information to keep you informed about the world of oil analysis.
- [Sampling Procedures](https://www.blackstone-labs.com/sampling-procedures/) - Most people take an oil sample during an oil change. Or you can do it with a quick-draw pump. Either way, instructions are below.
- [Free Test Kits](https://www.blackstone-labs.com/free-test-kits/) - Not much in life is truly free, but these kits are. All it costs you is the time it takes to fill out the form. Just one more reason to love Blackstone!
- [Gas Engine Reports](https://www.blackstone-labs.com/gas-engine-reports/) - Use data to monitor your gas engine's health and decide whether you can run the oil longer, what oil to use, and more!
- [Transmission Oil Reports](https://www.blackstone-labs.com/transmission-oil-reports/) - Transmission oil can be contaminated with metals, solids, and moisture. Find problems and determine the correct oil and optimal change interval with analysis.
- [Marine Oil Reports](https://www.blackstone-labs.com/marine-oil-reports/) - Use oil analysis in your marine engines to find problems before they leave you stranded at sea. We test engines, transmissions, generators, and more!
- [Aircraft Reports](https://www.blackstone-labs.com/aircraft-reports/) - Use data to find problems in your aircraft engine before they become serious. Trend monitoring provides peace of mind and helps eliminate surprises in the air.
- [Motorcycle Oil Reports](https://www.blackstone-labs.com/motorcycle-oil-reports/) - Motorcycles see different use than cars and trucks. Use oil analysis to fine problems in the engine and transmission, the optimal oil change interval, and more!
- [Diesel Oil Reports](https://www.blackstone-labs.com/diesel-reports/) - Use data to monitor your diesel engine's health. Can you run the oil longer? What oil should you use? Is contamination present? Find out with an oil test!
- [Press Mentions](https://www.blackstone-labs.com/press-mentions/) - Blackstone is in the news! Read reviews and discussions about our oil analysis services on various media from these links.
- [Contact Us](https://www.blackstone-labs.com/contact-us/) - We like hearing from our customers! How can we help? Give us a shout. You'll always get a person on the phone, and emails are answered same day we receive them.
- [Testimonials](https://www.blackstone-labs.com/testimonials/) - Thinking about trying oil analysis? Not quite sure if it's for you? Read on, and feel the Blackstone loooooove!
- [Oil Filter Testing](https://www.blackstone-labs.com/oil-filter-testing/) - Oil filter testing is something you can do yourself (read our article to learn how!), or you can send us your filter pleats for analysis.
- [People](https://www.blackstone-labs.com/people/) - Meet the people of Blackstone - our analysts, our lab operators, the people you talk with on the phone, and those who work behind the scenes.
- [Employment](https://www.blackstone-labs.com/employment/) - Employment opportunities at Blackstone Laboratories in Fort Wayne, Indiana! People apply because they need a job. They stay because we're a great place to work.

## Products

- [Viscosity @ 40 C (LTV)](https://www.blackstone-labs.com/product/viscosity-40c/) - Based on ASTM D445, this test is also known as the “low-temp viscosity” (LTV). 40°C is a common temperature to test the viscosity of oil at. Our standard analysis includes viscosity at 100°C. Minimum amount of oil required: 50 ml
- [Ox / Nitration](https://www.blackstone-labs.com/product/oxidation-nitration/) - Based on ASTM E2412, this test is done with an FTiR spectrometer. The oxidation test will indicate how oxidized an oil is. Nitration measures how an engine oil changes as it is exposed to heat and use. Excess nitration can cause the oil’s viscosity to thicken. Minimum amount of oil required: 50 ml
- [Brake Fluid](https://www.blackstone-labs.com/product/brake-fluid/) - Our brake fluid testing includes a spectral examination, water by crackle, and percent oil separation. It’s commonly only done if you suspect the brake fluid is contaminated. We do not determine whether the brake fluid is useable or not; we only report if it’s contaminated with water or oil. Minimum amount of fluid needed: 50
- [Gasoline Test Kit](https://www.blackstone-labs.com/product/gas-test-kit/) - Determine your fuel's condition with our gas testing kit! The kit includes UPS shipping to and from Blackstone Laboratories in Hazmat-certified containers (continental US only). It also includes the following tests: Spectral exam - ideally nothing will be present but boron (a common gas additive). Specific gravity - we'll tell you if the SG is in
- [Full PCBs](https://www.blackstone-labs.com/product/full-pcbs/) - This test (EPA Method 8082) determines the exact level of PCB contamination in an oil, down to the nearest ppm. This test is not done in-house, so the turn-around time will typically be about a week longer than normal. Minimum amount of oil required: 90 ml (one full sample bottle)
- [Chlorine 9056A](https://www.blackstone-labs.com/product/chlorine-9056a/) - Most test methods for reading chlorine are actually reading Total Halogens, but the results can usually be considered the same because chlorine is by far the most common of the elements in the Halogen family on the periodic table. Other halogens include fluorine, bromine, iodine, astatine, and tennessine. This test (EPA Method 9056A) actually reports
- [Gift Certificate](https://www.blackstone-labs.com/product/gift-certificate/) - The perfect gift for the gear head in your life! Give the gift of peace of mind - oil analysis can help determine engine condition, find problems, and see how well the oil is holding up. Add a TBN (gas/diesel engine oil only) for the person who wants to push the envelope on oil change
- [Soot Test](https://www.blackstone-labs.com/product/soot-test/) - Based on ASTM E2412, this test will report the percentage of soot in the oil using an FTiR spectrometer. Soot is commonly found in diesel oil and when the level gets excessive, that can indicate a combustion problem is present. While running the insolubles test that’s included in our standard analysis, we will visually judge
- [TAN](https://www.blackstone-labs.com/product/tan/) - This test is based on ASTM Method D664 and gives you an idea about how acidic an oil is. As an oil sees use (especially engine oil), it can become more acidic and that acidity can lead to break-down of the oil. This test is useful if you are interested in extending your oil use,
- [TBN](https://www.blackstone-labs.com/product/tbn/) - The Total Base Number test is based on ASTM D4739 and gives a measure of the amount of active additive present in the oil. When an oil is new, the TBN level is directly related to the amount of detergent/dispersant additive (basically calcium and magnesium) that was added during the blending process. As an oil
- [Oil sample](https://www.blackstone-labs.com/product/oil-sample/) - Our standard oil sample is all most people need. The standard sample includes: Spectral exam (looks at how the engine is wearing, the oil's additives, and more) Viscosity (checks the grade, or thickness, of the oil) Insolubles (total solids) Flashpoint (checks for fuel and other contaminants) You do not need your customer number or an account to pay for a sample. We will match up your payment with your sample. This option only pays for the sample. If you need kits, let us know when you check out.
- [Viscosity in cP](https://www.blackstone-labs.com/product/viscosity-in-cp/) - We take the kinematic viscosity at 40°C and multiply it by the density of the oil in g/ml.
- [Oil Filter Pleats](https://www.blackstone-labs.com/product/oil-filter-pleats/) - Filter analysis is something you can (and should) do yourself, to get a baseline idea of what’s normal. Filter debris tends to fall into three categories: Metallic Carbon pieces Unknown All engines produce metal; the trick is to know what’s normal and what’s not. Some metal and carbon is okay. If you want us to
- [Oil Filter Canister](https://www.blackstone-labs.com/product/oil-filter-canister/) - Filter analysis is something you can (and should) do yourself, to get a baseline idea of what’s normal. Filter debris tends to fall into three categories: Metallic Carbon pieces Unknown All engines produce metal; the trick is to know what’s normal and what’s not. Some metal and carbon is okay. The least expensive option for
- [Specific Gravity](https://www.blackstone-labs.com/product/specific-gravity/) - The specific gravity test determines the density of a fluid in relation to water. Pure water has a specific gravity of 1. Anything that is lighter than water (or will float on water – like oil) will have a specific gravity of less than 1. Anything that is heavier than water will have a specific
- [API Gravity](https://www.blackstone-labs.com/product/api-gravity/) - The API gravity is performed just like the specific gravity test, but the results are reported on the API scale and don’t necessarily have anything to do with water. You can easily convert API gravity to specific gravity and vice versa. Minimum amount of oil required: 50 ml
- [BTU by API Gravity](https://www.blackstone-labs.com/product/btu-by-api-gravity/) - This test gives you an estimate of the BTU content of an oil, based on the API gravity reading. We report both the Total Heating Value and Net Heating Value. Minimum amount of oil required: 50 ml
- [Water by Crackle](https://www.blackstone-labs.com/product/water-by-crackle/) - This is a simple test that can identify water in oil by listening for an audible crackle or seeing the sample visually boil. It’s done during the flashpoint test and is part of our standard analysis. As oil is slowly added into the hot flashpoint cup, the operator is looking for these clues to determine if
- [Initial pH](https://www.blackstone-labs.com/product/initial-ph/) - ASTM D7946. This test looks at the how acidic or basic an oil is after the titration solvent is added. You cannot run a pH on an oil directly, but the titration solvent has water present and we can measure the pH on that after the oil and solvents are mixed. Minimum amount of oil
- [DEF Testing](https://www.blackstone-labs.com/product/def-testing/) - This test is done using a refractometer and can only give reliable results if the DEF is free of any petroleum contamination like diesel fuel. This test can only be run on DEF (diesel exhaust fluid) or diesel fuel with a separated water phase. Cannot be run on oil or diesel fuel. Minimum amount of
- [Particle Count](https://www.blackstone-labs.com/product/particle-count/) - Also known as the ISO Cleanliness Code, this test determines how many particles are present in the oil and what their sizes are in microns. The machine shoots a laser beam through the oil to a light detector on the other side of the stream to determine the particle size and count. This test cannot
- [PQ Index](https://www.blackstone-labs.com/product/pq-index/) - The Particle Quantifier Index test gives you a unit-less number that can be used to indicate how much ferrous material is present in an oil. This measure generally looks at larger particles than what the spectrometer can read. We do not do this test in-house, so results take an extra week. Minimum amount of oil
- [Bacteria](https://www.blackstone-labs.com/product/bacteria/) - A bacteria test is primarily done on diesel fuel, but it can be done on any fluid that bacteria can grow in. If diesel fuel gets contaminated with water, it’s not uncommon for bacterial to grow at the interface between the fuel and water. This test is not included in the diesel fuel package, but
- [Grease](https://www.blackstone-labs.com/product/grease/) - Our grease testing is limited to a spectral examination. We dissolve a portion of the grease sample in kerosene and run it on our spectrometer to see what elements show up. Minimum amount of oil required: 10 ml (or 5 grams)
- [Karl Fischer](https://www.blackstone-labs.com/product/karl-fischer/) - This test is based on ASTM D6304 and is used to determine the exact quantity of water in an oil at the PPM level. This test will provide a more exact level of water than what is included in our standard analysis. Minimum amount of oil required: 20 ml
- [On-Spec Waste Oil](https://www.blackstone-labs.com/product/on-spec-waste-oil/) - If you buy waste oil that you are planning on burning for heat, this test will let you know if the oil is safe to burn. It includes testing for toxic elements like arsenic, cadmium, chromium, and lead. It also includes a Total Halogen Screen and check for water via the crackle method, along with
- [PCB Screen](https://www.blackstone-labs.com/product/pcb-screen/) - This test is done in-house and uses a kit made by Dexsil Inc. and follows EPA SW-846 method 9079. The screen will check an oil for PCB contamination and the results will be reported at greater than 50 ppm or less than 50 ppm. Minimum amount of oil required: 10 ml
- [Percent Ash](https://www.blackstone-labs.com/product/percent-ash/) - This test follows ASTM D482 and is used to determine how much ash is present in an oil after it is burned. This test is commonly done on oils that don’t contain any additives. Minimum amount of oil required: 20 ml
- [Percent Sulfated Ash](https://www.blackstone-labs.com/product/percent-sulfated-ash/) - This test (ASTM D874) is similar to the regular Percent Ash, but takes an extra step, adding sulfuric acid to the ash and then re-burning it. This test is commonly done to determine the amount of ash present from additives in unused engine oil. Minimum amount of oil required: 20 ml
- [Reid Vapor Pressure](https://www.blackstone-labs.com/product/reid-vapor-pressure/) - Based on ASTM D323, this test is only done on gasoline and measures the pressure change of gasoline as it’s heated up. This indicates how volatile the gasoline is. The Reid Vapor Pressure will change as the seasons change and this change is regulated by the gasoline manufacturer. Gasoline sold in the winter will typically
- [Single Elements](https://www.blackstone-labs.com/product/single-elements/) - Our ICP spectrometer has the ability to measure many different elements that are not included in the standard analysis. Some common ones we get requests for are cobalt, tungsten, and vanadium. If you have an element you’d like tested that’s not included in our standard analysis, just email or give us a call and we’ll
- [Sulfur](https://www.blackstone-labs.com/product/sulfur/) - We test for sulfur in oils and fuels using our ICP spectrometer. Sulfur-based additives are commonly used in engine oil, though the amount of sulfur is limited in diesel fuel to 15 ppm. Minimum amount of oil required: 10 ml
- [Total Chlorine / Halogens Screen](https://www.blackstone-labs.com/product/total-chlorine-halogens-screen/) - This test is done in-house using a kit made by Dexsil Inc. The test follows EPA SW-846, method 9077 and determines total chlorine and other halogens in a range from 200 ppm to 4,000 ppm. This test is included with the On-Spec waste oil test but can also be ordered as a stand-alone test if
- [Total Halogens](https://www.blackstone-labs.com/product/total-halogens/) - This test covers chlorine and all other halogens that might be present. It has a minimum detection limit of 200 ppm. This test is done using X-Ray Fluorescence Spectrometry (XRF) and is more accurate than the Total Chlorine/Halogens screen. This test is not done in-house, so the turn-around time will typically be about a week
- [Viscosity Index](https://www.blackstone-labs.com/product/viscosity-index/) - Based on ASTM D2270, this test produces a unit-less number and gives you an idea of how an oil’s viscosity changes between 40°C and 100°C. Straight weight oils have a viscosity index around 95. Multi-grade oils have a higher viscosity index, and synthetic oils will be even higher still. Synthetic oils are often known as
- [Oil + PC + TAN](https://www.blackstone-labs.com/product/oil-pc-tan/) - Get a Particle Count (PC) and a Total Acid Number (TAN) with your standard analysis. These tests are calibrated for industrial applications like gear oil and hydraulic oil, not engine oil. The Particle Count breaks down the number of particles present in a sample at various levels of microns. Let us know if you need kits.
- [Bulk Samples](https://www.blackstone-labs.com/product/bulk-samples/) - Get a discount on your oil analysis by prepaying in bulk! The more you buy, the less per sample. Free shipping!| Blackstone Laboratories
- [Quick-Draw Pump](https://www.blackstone-labs.com/product/quick-draw-pump/) - Take a sample without changing the oil with our reusable pump! American-made in Tennessee, this durable pump is constructed with cast aluminum. Includes reusable tubing. Let us know if you need kits. Free shipping!
- [Oil + TBN](https://www.blackstone-labs.com/product/oil-tbn/) - Get a TBN with your standard engine oil sample! The standard sample with TBN includes: Spectral exam Viscosity Insolubles (total solids) Flashpoint (checks for fuel and other contaminants) A Total Base Number, which measures the amount of active additive remaining in the oil. Good for exploring extended oil changes. You do not need your customer number or an account to pay for a sample. We will match up your payment with your sample. Let us know if you need kits.
- [Oil + TAN](https://www.blackstone-labs.com/product/oil-tan/) - Get a Total Acid Number test with your standard analysis to determine the acidity of the oil. The TAN is mainly used for transmissions, gear oils, and industrial-type applications, not engine oil. A standard sample with TAN includes: Spectral exam Viscosity Insolubles (total solids) Flashpoint (checks for fuel and other contaminants) Total Acid Number, which measures the the oil's acidity level Let us know if you need kits.
- [Vintage sticker](https://www.blackstone-labs.com/product/vintage-aircraft-sticker/) - Sticker is 4" in diameter. Adhesive is non-removeable.
- [Blackstone Sticker](https://www.blackstone-labs.com/product/blackstone-sticker/) - Sticker is 4" in diameter. Note: adhesive is non-removeable.
- [Diesel Fuel Test Kit](https://www.blackstone-labs.com/product/diesel-fuel-sample/) - Determine your fuel's condition with our diesel fuel kit! Our diesel testing kit includes UPS shipping to and from Blackstone Laboratories in Hazmat-certified containers (continental US only). It also includes the following tests, with commentary on whether the fuel meets specifications in the following areas: Spectral exam - ideally the spectral exam will be all
- [Blackstone Hat](https://www.blackstone-labs.com/product/blackstone-hat/) - Show off your Blackstone love with our black, 100% brushed cotton twill hat. Adjustable to any size brain!
- [Slick Talk T-Shirt](https://www.blackstone-labs.com/product/slick-talk-t-shirt/) - If you're fan of our podcast Slick Talk (or someone that just appreciates awesome apparel design in general), this is the shirt for you! Our Slick Talk shirts have the podcast's name screen printed on the front, with our unmistakable Blackstone oil drop printed on the back. Sizes range from S-2X, but special sizes are
- [Slick Talk Hats](https://www.blackstone-labs.com/product/slick-talk-hats/) - Show your loyalty to Blackstone Joe and our Slick Talk podcast with a Slick Talk hat! Like our Blackstone hats, this cap is adjustable to any size brain. Guaranteed conversation starter. Free shipping!
- [TBN/TAN/Soot Test](https://www.blackstone-labs.com/product/tbn-tan-soot-test/) - Use this to pay for a $10 TBN, TAN, or soot test. If you need to pay a $10 invoice we sent you, you're in the right place! We will apply this $10 payment toward your outstanding invoice.
- [Coolant](https://www.blackstone-labs.com/product/coolant/) - Test your coolant to see if it’s good condition. The focus of our coolant test is to see whether the cooling system needs flushed and/or if the coolant can stay in use. We can also tell you if the right water/glycol ratio is present, and the pH test looks at whether the coolant is acidic

## FAQs

- [How about tape? Will it help if I tape the hell out of it?](https://www.blackstone-labs.com/faq-items/how-about-tape-will-it-help-if-i-tape-the-hell-out-of-it/) - Apparently everyone loves tape. We get so much tape on oil sample containers that we should be in the used-tape business. But you know what doesn’t work very well? Scotch tape. Don’t do it. It’s really not any good. Our apologies to the Scotch tape people. Now electrical tape…that’s tape we can respect.
- [Do I need to have one of your kits to send in a sample?](https://www.blackstone-labs.com/faq-items/do-i-need-to-have-one-of-your-kits-to-send-in-a-sample/) - No. You can send it in any package that won’t leak. Notice the key words here: won’t leak. Any clean and dry container with a screw-on cap should be okay. Bad choices for the mail include Tupperware, film canisters, pickle jars, and aspirin bottles. Believe me, nothing ruins my day like opening a sample and getting
- [Is there any way to avoid the post office hassle?](https://www.blackstone-labs.com/faq-items/is-there-any-way-to-avoid-the-post-office-hassle/) - Sure, send it UPS or FedEx. Postage will cost a little more, but it might be worth it.
- [Seriously. How long should I wait before I give it up for lost and send in another one?](https://www.blackstone-labs.com/faq-items/seriously-how-long-should-i-wait-before-i-give-it-up-for-lost-and-send-in-another-one/) - Give it at least a month. They don’t actually get lost very often, and they do usually find their way here eventually. Sometimes they go to another lab and then to us. Sometimes they get held up in quarantine while the post office figures out whether it’s hazardous. (For the record, it’s not: You can
- [But I need to yell at someone. How about you? Can I call up and yell at you?](https://www.blackstone-labs.com/faq-items/but-i-need-to-yell-at-someone-how-about-you-can-i-call-up-and-yell-at-you/) - Knock yourself out.
- [You know, I thought the post office looked kind of suspicious when I took the sample in. Since you don’t have it yet, maybe it’s lost. Should I yell at the post office?](https://www.blackstone-labs.com/faq-items/you-know-i-thought-the-post-office-looked-kind-of-suspicious-when-i-took-the-sample-in-since-you-dont-have-it-yet-maybe-its-lost-should-i-yell-at-the-post-office/) - Feel free. They are pretty good about delivering. Be sure to check your tracking number. You’d be amazed at the number of people who don’t take this simple step before calling us.
- [Aw, come on. Are you sure you don’t have it stashed away somewhere?](https://www.blackstone-labs.com/faq-items/aw-come-on-are-you-sure-you-dont-have-it-stashed-away-somewhere/) - Trust me. We don’t make money unless we run your sample, so we don’t have any reason to leave them sitting around in back somewhere. If you receive more kits from us, then we either got your sample or we got your online payment. We automatically send a couple kits when we put you into
- [Where is my sample? I sent it in a week ago and haven't heard anything.](https://www.blackstone-labs.com/faq-items/where-is-my-sample-i-sent-it-in-a-week-ago-and-havent-heard-anything/) - Chances are we don’t have it yet. We do a pretty good job keeping up, unless there was a holiday or something and we’re just inundated with samples. If tracking says it’s here, then it’s probably in line for testing. It’s also possible it’s done, but the email went to spam. If it’s not there,

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- [antifreeze](https://www.blackstone-labs.com/tag/antifreeze/)
- [coolant](https://www.blackstone-labs.com/tag/coolant/)
- [Mobil 1](https://www.blackstone-labs.com/tag/mobil-1/)
- [Royal Purple](https://www.blackstone-labs.com/tag/royal-purple/)
- [Quaker State](https://www.blackstone-labs.com/tag/quaker-state/)
- [Mobil](https://www.blackstone-labs.com/tag/mobil/)
- [failure](https://www.blackstone-labs.com/tag/failure/)
- [BMW](https://www.blackstone-labs.com/tag/bmw/)
- [oxidation](https://www.blackstone-labs.com/tag/oxidation/)
- [engine failure](https://www.blackstone-labs.com/tag/engine-failure/)
- [debris](https://www.blackstone-labs.com/tag/debris/)
- [clog](https://www.blackstone-labs.com/tag/clog/)
- [Blackstone](https://www.blackstone-labs.com/tag/blackstone/)
- [Jim Stark](https://www.blackstone-labs.com/tag/jim-stark/)
- [oil analysis](https://www.blackstone-labs.com/tag/oil-analysis/)
- [pre-buy](https://www.blackstone-labs.com/tag/pre-buy/)
- [air filtration](https://www.blackstone-labs.com/tag/air-filtration/)
- [air filter](https://www.blackstone-labs.com/tag/air-filter/)
- [towing](https://www.blackstone-labs.com/tag/towing/)
- [differential](https://www.blackstone-labs.com/tag/differential/)
- [Toyota](https://www.blackstone-labs.com/tag/toyota/)
- [pickup](https://www.blackstone-labs.com/tag/pickup/)
- [truck](https://www.blackstone-labs.com/tag/truck/)
- [automatic](https://www.blackstone-labs.com/tag/automatic/)
- [manual](https://www.blackstone-labs.com/tag/manual/)
- [ATF](https://www.blackstone-labs.com/tag/atf/)
- [MTF](https://www.blackstone-labs.com/tag/mtf/)
- [heat](https://www.blackstone-labs.com/tag/heat/)
- [CVT](https://www.blackstone-labs.com/tag/cvt/)
- [thickness](https://www.blackstone-labs.com/tag/thickness/)
- [Kia](https://www.blackstone-labs.com/tag/kia/)
- [flashpoint](https://www.blackstone-labs.com/tag/flashpoint/)
- [idling](https://www.blackstone-labs.com/tag/idling/)
- [GM](https://www.blackstone-labs.com/tag/gm/)
- [350](https://www.blackstone-labs.com/tag/350/)
- [rebuild](https://www.blackstone-labs.com/tag/rebuild/)
- [OLM](https://www.blackstone-labs.com/tag/olm/)
- [marine](https://www.blackstone-labs.com/tag/marine/)
- [boat](https://www.blackstone-labs.com/tag/boat/)
- [gear oil](https://www.blackstone-labs.com/tag/gear-oil/)
- [Renuzit](https://www.blackstone-labs.com/tag/renuzit/)
- [ZDDP](https://www.blackstone-labs.com/tag/zddp/)
- [method](https://www.blackstone-labs.com/tag/method/)
- [dark oil](https://www.blackstone-labs.com/tag/dark-oil/)
- [adding oil](https://www.blackstone-labs.com/tag/adding-oil/)
- [total acid number](https://www.blackstone-labs.com/tag/total-acid-number/)
- [total base number](https://www.blackstone-labs.com/tag/total-base-number/)
- [oil brand](https://www.blackstone-labs.com/tag/oil-brand/)
- [Havoline](https://www.blackstone-labs.com/tag/havoline/)
- [Meijer](https://www.blackstone-labs.com/tag/meijer/)
- [Wolf](https://www.blackstone-labs.com/tag/wolf/)
- [Wolf's Head](https://www.blackstone-labs.com/tag/wolfs-head/)
- [Castrol GTX](https://www.blackstone-labs.com/tag/castrol-gtx/)
- [additive](https://www.blackstone-labs.com/tag/additive/)
- [scientific method](https://www.blackstone-labs.com/tag/scientific-method/)
- [zinc](https://www.blackstone-labs.com/tag/zinc/)
- [phosphorus](https://www.blackstone-labs.com/tag/phosphorus/)
- [rocks](https://www.blackstone-labs.com/tag/rocks/)
- [landslide](https://www.blackstone-labs.com/tag/landslide/)
- [particles](https://www.blackstone-labs.com/tag/particles/)
- [size](https://www.blackstone-labs.com/tag/size/)
- [microns](https://www.blackstone-labs.com/tag/microns/)
- [racing](https://www.blackstone-labs.com/tag/racing/)
- [engine wear](https://www.blackstone-labs.com/tag/engine-wear/)
- [Chevelle](https://www.blackstone-labs.com/tag/chevelle/)
- [hybrid](https://www.blackstone-labs.com/tag/hybrid/)
- [Cummins](https://www.blackstone-labs.com/tag/cummins/)
- [laboratory](https://www.blackstone-labs.com/tag/laboratory/)
- [early days](https://www.blackstone-labs.com/tag/early-days/)
- [cylinders](https://www.blackstone-labs.com/tag/cylinders/)
- [break-in](https://www.blackstone-labs.com/tag/break-in/)
- [leaning](https://www.blackstone-labs.com/tag/leaning/)
- [corvette](https://www.blackstone-labs.com/tag/corvette/)
- [UL94](https://www.blackstone-labs.com/tag/ul94/)
- [unleaded fuel](https://www.blackstone-labs.com/tag/unleaded-fuel/)
- [Swift fuel](https://www.blackstone-labs.com/tag/swift-fuel/)
- [S54](https://www.blackstone-labs.com/tag/s54/)
- [F350](https://www.blackstone-labs.com/tag/f350/)
- [Artificial intelligence](https://www.blackstone-labs.com/tag/artificial-intelligence/)
- [classic cars](https://www.blackstone-labs.com/tag/classic-cars/)
- [Do I need zinc](https://www.blackstone-labs.com/tag/do-i-need-zinc/)
- [LS-7](https://www.blackstone-labs.com/tag/ls-7/)
- [mustang](https://www.blackstone-labs.com/tag/mustang/)
- [timing chain](https://www.blackstone-labs.com/tag/timing-chain/)
- [Suburban](https://www.blackstone-labs.com/tag/suburban/)
- [ring wear](https://www.blackstone-labs.com/tag/ring-wear/)
- [Honda](https://www.blackstone-labs.com/tag/honda/)
- [sludge](https://www.blackstone-labs.com/tag/sludge/)
- [oil consumption](https://www.blackstone-labs.com/tag/oil-consumption/)
- [make-up oil](https://www.blackstone-labs.com/tag/make-up-oil/)
- [excess oil](https://www.blackstone-labs.com/tag/excess-oil/)
- [Subaru](https://www.blackstone-labs.com/tag/subaru/)
- [STi](https://www.blackstone-labs.com/tag/sti/)
- [Mazda](https://www.blackstone-labs.com/tag/mazda/)
- [extended oil use](https://www.blackstone-labs.com/tag/extended-oil-use/)
- [10000](https://www.blackstone-labs.com/tag/10000/)
- [20000](https://www.blackstone-labs.com/tag/20000/)
- [long oil change](https://www.blackstone-labs.com/tag/long-oil-change/)
- [Crosstrek](https://www.blackstone-labs.com/tag/crosstrek/)
- [Pilot](https://www.blackstone-labs.com/tag/pilot/)
- [Ford](https://www.blackstone-labs.com/tag/ford/)
- [normal](https://www.blackstone-labs.com/tag/normal/)
- [abnormal](https://www.blackstone-labs.com/tag/abnormal/)

## Product categories

- [Fuel](https://www.blackstone-labs.com/product-category/fuel/) - Special, prepaid test kits for shipping hazardous materials via UPS.
- [Slick Talk](https://www.blackstone-labs.com/product-category/slick-talk/) - Get merch from Blackstone’s original podcast, Slick Talk!
- [Pump](https://www.blackstone-labs.com/product-category/pump/) - Use our hand-held pump to pull oil through the dipstick to sample without doing an oil change.
- [Blackstone Gear](https://www.blackstone-labs.com/product-category/blackstone-gear/) - Blackstone-up your world with premium Blackstone gear! Whether you need a shop towel, a hat to keep the sun out of your eyes, something to warm your brain in the cold, or a sticker for your too-big forehead, we’ve got you covered.
- [Oil samples](https://www.blackstone-labs.com/product-category/oil-samples/) - Pay for your samples here.
- [Coolant](https://www.blackstone-labs.com/product-category/coolant/)
- [Filters](https://www.blackstone-labs.com/product-category/fitlers/)
- [Other tests](https://www.blackstone-labs.com/product-category/other-tests/)

## Product tags

- [fuel](https://www.blackstone-labs.com/product-tag/fuel/)
- [gas](https://www.blackstone-labs.com/product-tag/gas/)
- [gasoline](https://www.blackstone-labs.com/product-tag/gasoline/)
- [shirt](https://www.blackstone-labs.com/product-tag/shirt/)
- [hat](https://www.blackstone-labs.com/product-tag/hat/)
- [t-shirt](https://www.blackstone-labs.com/product-tag/t-shirt/)
- [slick talk](https://www.blackstone-labs.com/product-tag/slick-talk/)
- [podcast](https://www.blackstone-labs.com/product-tag/podcast/)
- [gift certificate](https://www.blackstone-labs.com/product-tag/gift-certificate/)
- [oil](https://www.blackstone-labs.com/product-tag/oil/)
- [pump](https://www.blackstone-labs.com/product-tag/pump/)
- [vacuum](https://www.blackstone-labs.com/product-tag/vacuum/)
- [bulk](https://www.blackstone-labs.com/product-tag/bulk/)
- [kits](https://www.blackstone-labs.com/product-tag/kits/)
- [gear](https://www.blackstone-labs.com/product-tag/gear/)
- [pay](https://www.blackstone-labs.com/product-tag/pay/)
- [TBN](https://www.blackstone-labs.com/product-tag/tbn/)
- [TAN](https://www.blackstone-labs.com/product-tag/tan/)
- [PC](https://www.blackstone-labs.com/product-tag/pc/)
- [sticker](https://www.blackstone-labs.com/product-tag/sticker/)
- [diesel](https://www.blackstone-labs.com/product-tag/diesel/)
- [coolant](https://www.blackstone-labs.com/product-tag/coolant/)
- [antifreeze](https://www.blackstone-labs.com/product-tag/antifreeze/)
- [non-oil](https://www.blackstone-labs.com/product-tag/non-oil/)
- [wearables](https://www.blackstone-labs.com/product-tag/wearables/)
- [oil filter](https://www.blackstone-labs.com/product-tag/oil-filter/)
- [pleats](https://www.blackstone-labs.com/product-tag/pleats/)
- [canister](https://www.blackstone-labs.com/product-tag/canister/)
- [Total base number](https://www.blackstone-labs.com/product-tag/total-base-number/)
- [chlorine](https://www.blackstone-labs.com/product-tag/chlorine/)
- [bomb wash](https://www.blackstone-labs.com/product-tag/bomb-wash/)
- [total chlorine](https://www.blackstone-labs.com/product-tag/total-chlorine/)
- [viscosity](https://www.blackstone-labs.com/product-tag/viscosity/)
- [VI](https://www.blackstone-labs.com/product-tag/vi/)
- [grade](https://www.blackstone-labs.com/product-tag/grade/)
- [multi-grade](https://www.blackstone-labs.com/product-tag/multi-grade/)
- [halogens](https://www.blackstone-labs.com/product-tag/halogens/)
- [transformer oil](https://www.blackstone-labs.com/product-tag/transformer-oil/)
- [total halogens](https://www.blackstone-labs.com/product-tag/total-halogens/)
- [additive](https://www.blackstone-labs.com/product-tag/additive/)
- [spectrometer](https://www.blackstone-labs.com/product-tag/spectrometer/)
- [element](https://www.blackstone-labs.com/product-tag/element/)
- [periodic table](https://www.blackstone-labs.com/product-tag/periodic-table/)
- [arsenic](https://www.blackstone-labs.com/product-tag/arsenic/)
- [cadmium](https://www.blackstone-labs.com/product-tag/cadmium/)
- [cobalt](https://www.blackstone-labs.com/product-tag/cobalt/)
- [tungsten](https://www.blackstone-labs.com/product-tag/tungsten/)
- [vanadium](https://www.blackstone-labs.com/product-tag/vanadium/)
- [ash](https://www.blackstone-labs.com/product-tag/ash/)
- [sulfur](https://www.blackstone-labs.com/product-tag/sulfur/)
- [sulfuric acid](https://www.blackstone-labs.com/product-tag/sulfuric-acid/)
- [PCBs](https://www.blackstone-labs.com/product-tag/pcbs/)
- [contamination](https://www.blackstone-labs.com/product-tag/contamination/)
- [EPA. waste oil](https://www.blackstone-labs.com/product-tag/epa-waste-oil/)
- [hazardous](https://www.blackstone-labs.com/product-tag/hazardous/)
- [burn oil](https://www.blackstone-labs.com/product-tag/burn-oil/)
- [waste](https://www.blackstone-labs.com/product-tag/waste/)
- [compliance](https://www.blackstone-labs.com/product-tag/compliance/)
- [furnace](https://www.blackstone-labs.com/product-tag/furnace/)
- [regulations](https://www.blackstone-labs.com/product-tag/regulations/)
- [heavy metals](https://www.blackstone-labs.com/product-tag/heavy-metals/)
- [water](https://www.blackstone-labs.com/product-tag/water/)
- [ppm](https://www.blackstone-labs.com/product-tag/ppm/)
- [EPA](https://www.blackstone-labs.com/product-tag/epa/)
- [brake system](https://www.blackstone-labs.com/product-tag/brake-system/)
- [brakes](https://www.blackstone-labs.com/product-tag/brakes/)
- [diesel fuel](https://www.blackstone-labs.com/product-tag/diesel-fuel/)
- [oxidation](https://www.blackstone-labs.com/product-tag/oxidation/)
- [nitration](https://www.blackstone-labs.com/product-tag/nitration/)
- [iron](https://www.blackstone-labs.com/product-tag/iron/)
- [particles](https://www.blackstone-labs.com/product-tag/particles/)
- [ISO Code](https://www.blackstone-labs.com/product-tag/iso-code/)
- [ISO Cleanliness Code](https://www.blackstone-labs.com/product-tag/iso-cleanliness-code/)
- [3-number](https://www.blackstone-labs.com/product-tag/3-number/)
- [DEF](https://www.blackstone-labs.com/product-tag/def/)
- [urea](https://www.blackstone-labs.com/product-tag/urea/)
- [acid](https://www.blackstone-labs.com/product-tag/acid/)
- [acidity](https://www.blackstone-labs.com/product-tag/acidity/)
- [neutral](https://www.blackstone-labs.com/product-tag/neutral/)
- [base](https://www.blackstone-labs.com/product-tag/base/)
- [basic](https://www.blackstone-labs.com/product-tag/basic/)
- [pH](https://www.blackstone-labs.com/product-tag/ph/)
- [flashpoint](https://www.blackstone-labs.com/product-tag/flashpoint/)
- [vapors](https://www.blackstone-labs.com/product-tag/vapors/)
- [BTU](https://www.blackstone-labs.com/product-tag/btu/)
- [heating value](https://www.blackstone-labs.com/product-tag/heating-value/)
- [net heating value](https://www.blackstone-labs.com/product-tag/net-heating-value/)
- [low-temp](https://www.blackstone-labs.com/product-tag/low-temp/)
- [40°C](https://www.blackstone-labs.com/product-tag/40c/)
- [100°F](https://www.blackstone-labs.com/product-tag/100f/)
- [specific gravity](https://www.blackstone-labs.com/product-tag/specific-gravity/)
- [API scale](https://www.blackstone-labs.com/product-tag/api-scale/)
- [total acid number](https://www.blackstone-labs.com/product-tag/total-acid-number/)
- [additives](https://www.blackstone-labs.com/product-tag/additives/)
- [unburned fuel](https://www.blackstone-labs.com/product-tag/unburned-fuel/)
- [filtration](https://www.blackstone-labs.com/product-tag/filtration/)
- [cP. centipoise](https://www.blackstone-labs.com/product-tag/cp-centipoise/)
- [kinematic viscosity](https://www.blackstone-labs.com/product-tag/kinematic-viscosity/)
- [density](https://www.blackstone-labs.com/product-tag/density/)

## FAQ Categories

- [Gas/Diesel FAQs](https://www.blackstone-labs.com/faq_category/gas-diesel-faqs/)