donnee

Im curious as to who y all send your oil for testing to?
Which one gives the most complete results or are they all the same and
What is the usual turnaround time for the results?

sabersix

I use Blackstone Labs. They return the analysis by email usually a week after I mail it. I like them because they provide a written interpretation of the numbers and give you a recommendation. Most labs just provided the numbers.

2rowdy

^^^ ditto.

John Faughn

Blackstone in past , now Cummins .

JCLeary

For me, Blackstone is awesome. They actually look at previous results and give you a paragraph on how your motor is doing. Well worth the $$, IMO.