At purchase the BMW dealer used BMW Twin Turbo 0w30 LL-01FE. In speaking with service advisor they use 0w30 in all vehicles that once called for 5w30 under the LL-01 spec. This car has N62 4.8 liter V8 that is naturally aspirated.
Some Bimmer forums are claiming the 0w30 is too thin for the V8 and one should run 0w40 or 5w40 that meets LL-01.
I’m leaning toward Castrol 5w40. Am I overthinking this?
Some Bimmer forums are claiming the 0w30 is too thin for the V8 and one should run 0w40 or 5w40 that meets LL-01.
I’m leaning toward Castrol 5w40. Am I overthinking this?