I saw a post on here some time ago that some labs don't actually count particles and sizes but count some particles and then use some formula for extrapolation. So I am looking for a lab to tell me about the actual particle count and size in my used oil to test my filtration and how well my engine is doing.
Links to websites or other contact information would be most appreciated. Thank you.
Links to websites or other contact information would be most appreciated. Thank you.