Originally Posted by TrackRat
If BMW didn't care about your engine they wouldn't bother telling you the correct oil to use that is derived from actual engineered tests.
Don't be a fanboy man. Can you see the dollar sign all over that? You can use $1 dollar oil and your engine would be fine at 50K miles if oil is changed frequently. Tell me what the hell is different from our engine to, let's say, Honda's S2000 that revs about the same? How about Porsche's 3.8L GT3's engine? It's even more impressive than ours (more HP and torque out of less cylinders and less displacement), revs even higher, and uses 'mundane' Mobil1 5/40. It's just a marketing scheme, and they can get away with that because they're paying for service.
And no, I don't own a Porsche or an S2000 but an E92 M3; I just don't happen to be blind with brand 'loyalty' with anything. But since most of us (including me) will keep using TWS at least for fear of losing our warranty, this discussion is pretty much over
. Good day.