Quote:
Originally Posted by sibhusz06
Maybe this has been asked, but are you guys running the newer Mobil 0w-40FS version which I believe isn't BLW LL 01 rated. I believe this rating really only effects long term drain intervals...
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LL01 is BMW's certification. With any formulation change, this means recertifying the oil with BMW. This is expensive and appears to be something that Mobil 1 isn't considering important from a marketing perspective.