Quote:
Originally Posted by Bdc101
I believe a higher LL- rating is OK to be substituted for an earlier LL- rating. ...
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Not always - BMW warn against using higher LL rated oils in many gasoline engines and even in diesels in some cases: -
"The LL-01 formula will cover almost all of BMW’s gasoline-burning engines except the diesel and M engines, and the LL-01 FE isn’t far behind. The newest blend is the LL-22 FE++, which is specified for the latest Gen 3 B58 and B48 engines with the mild-hybrid tech. However, it’s not backward compatible with older engines. Diesels have a few low SAPS (sulfated ash, phosphorus, and sulfur) blends to choose from to ensure their DPFs stay in good health, and while they may work in non-diesel engines, it’s not recommended."