I have, but they dont list email addresses. I suppose I could send in a letter the old fashion way....what a thought. Yes I do want creditable references for sure.
I am doing research for a paper I am writing on motor oils and oil specifications. More specific, I want to know about Long Life oil 01 (LL-01), the ACEA rating of A3 and SAE SN. What I am looking for are the technical numbers that are needed in order for oil to use these ratings. I have had no...