Quote:
Originally Posted by chris719
I would run an LL01 or LL04 3.5 HTHS oil in this engine if you care about protection above all. B58 does well with the thinner oils but S58 does not have the fancy IROX bearing coating and uses the same bearing materials used in S55 and S63.
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Yeah I decided to go with the Castrol edge 0w30 ll01. It’s quite annoying that bmw recommends and puts in 0w20 for fuel economy. Especially for people who gets the mx40i, I think most people not gonna care about a few mpg worse.