Used oil Analysis Blackstone vs. Cat

[Jake Raby]

No way those are the same oils that were tested. Something got mixed up somewhere, guaranteed as the results have a ton of differential in them.

The CAT tests looks to be the one thats off, because no way in hell does M1 0-40 have 1250 PPM Zn! The 1060 number that Blackstone has is spot on for that oil. Please don't think I am bragging about Blackstone, because I certainly am not.

Of course the Blackstone is easier to read, because they tell you a bunch of crap to make you feel better. Its all unicorns and rainbows.

That said, we don't use CAT only, I use CAT when I want to see particulate counts, or when I know an engine has wear and I want to grade that wear. ALS is the stand by for typical UOA thats non- developmental.

I would bring this up to CAT, it sounds like they gave you someone else's results.