Originally Posted by billzcat1 View Post
This is why you do UOA's, my 4.0 ran so smooth and quiet on the Castrol HM I was totally sold. But the UOA shows I can do better. UOA's are a great tool, I also learned my use is much closer to severe use than I would have guessed. So I'm cutting my OCI's back. The scary part is I ran the same stuff a full 5k without a UOA prior to this.
This was a winter blend of 5w20 and 5w30 that should have resulted in a standard 5w30, the original kv@100 was about 10.5. The moly is coming from a full can of MoS2 which I also added to the brew. I will not be using that any longer as it's not cost effective for shorter OCI's.