C
charleshickman
Guest
When the controversy first began, BMW and the API distinctly and openly disagreed. API said SJ oil is "better" than all prior ratings, and BMW said use "only SG or SH" rated oils because the SJ has reduced anti-wear additives (ZDDP specifically) and is not sufficient.
There were millions of words written on the topic.
You can all reach your own conclusions as to whether you want to agree with what BMW said regarding reduced anti-wear additives, or what the API said the car makers wanted, to protect catalytic converters for the US required 5 or 7 year emissions warranty.
I use only SG or SH rated oils. Castrol 4t Four Stroke Motorcycle Oil to be specific. Available on the shelf at Autozone and O'Reilly that I know of. You all can believe whomever you wish to believe, but I don't think API has warranted your engine.
I use BMW filters. I just went to my garage to check the bottles of Castrol GTX 20-50. API Service classification SH is listed, among others. Am I covered, in your opinion?