OIL ANALYSIS

Preventive Maintenance

for carstrucksaircraftmarineindustrytransmissions

Oil Analysis

Preventive maintenance

for carstrucksaircraftmarinemotorcyclesindustrytransmissions

What’s Going on in Your Engine?

Send us your oil and we’ll tell you — in plain English! — if your engine is healthy.

Free Test Kit

Free test kits

Get started with oil analysis by ordering a free test kit today!

What’s included?

Our standard analysis is all most people need. Every report includes:

  • A breakdown of wear metals and contaminants

  • A comparison to averages for your engine type

  • Comments written in plain English written by a real analyst

  • Guidance on whether anything needs attention

  • Suggestions on what to do next

Free Test Kit
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We test oil from:

  • Gas/Diesel engines
  • Aircraft engines

  • Marine engines

  • Transmissions, transfer cases, & differentials

  • Industrial applications

  • Off-Highway units

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Used Oil Analysis for:

  • Gas/Diesel engines
  • Aircraft engines

  • Marine engines

  • Transmissions, transfer cases, & differentials

  • Industrial applications

  • Off-Highway units

Oil testing is useful for:

Not sure if you need an oil test? Just ask — we’ll tell you the truth. Not everyone needs oil analysis.

oil pouring from bottle into engine
oil pouring from bottle into engine

Why People Choose Us

  • Real people write the reports

  • We’ve been analyzing oil since 1985

  • Call and get a person on the phone, every time

  • Clear, simple reports—no technical background needed

  • Trusted by everyday drivers, pilots, mechanics, and enthusiasts

Testimonials

You all provided me with the smoking gun that points to a potential cause for my car’s premature bearing failure. I believe this is the evidence I need to save thousands in out-of-pocket repairs and hold the dealership accountable for their shoddy work.

I want to sincerely thank your team for the work you do. I have always found impressive the scientific rigor you bring to the automotive industry and the insights you can glean from a small bottle of dirty oil and soot. Every vehicle I ever own will have routine oil analyses from Blackstone Labs. Thank you!

Zach H.

Engine oil pouring from one beaker onto another
A box of Blackstone's free test kits

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 sure enough, I had two bad exhaust valves and needed to replace two cylinders!!!!

I will be far more regular with my oil samples and put a lot of faith in you guys… So a huge shout out to everybody at Blackstone Laboratories.

Ben W.

Testimonials

A box of Blackstone's free test kits

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 the money and watching the trench, and sure enough, I had to bad exhaust valves and needed to replace two cylinders!!!!

I will be far more regular with my oil samples and put a lot of faith in you guys… So a huge shout out to everybody at Blackstone laboratories.

Ben W.

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.

Isaac A.

Engine oil pouring from one beaker onto another