Originally Posted by Nando
i just got my oil changed today..i uslally get castrol syntec 5w-30, but the place where i usually get it done at ran out of the castrol and i had to put in mobil 1 synthetic 5w30..from what ive read mobil 1 is crap so what should i do?
Neither one is right. You want the Castrol Syntec 0W
-30 or the Mobil 1 0W-40. Both of these oils meet the BMW LL01 specification. Castrol Syntec 5W-30 and Mobil 1 5W-30, both as sold in the United States, do not.
Or of course the BMW 5W-30, which while it comes from Castrol is not like the 5W-30 that we buy at the parts stores.
If it were me I would not panic, but I would change it much sooner than the CBS calls for.