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first used oil analysis, new member, no comparison analysis. the title's been edited by a mod to keep the titles standardized in this subforum. i will be doing a used oil analysis at every change now that i'm doing the switch from the more expensive RP (that doesn't seem to be doing a good...

sorry, doesn't appear as though i still can. this was moved from another forum into here, sorry.

2002 WRX 61,709mi cobb off the shelf stg. 1 for the last ~10k RP10w30 since ~ 32k Castrol Syntec before that oil taken during an oil change, switched over to 5w40 rotella t6. car has been autoxed and run a few HPDE days the copper and lead numbers have me mildly concerned but i'm interested...