Quote:
Originally Posted by SSJVegita
i was just wondering, if bmw requires 10w40 and u guys doing well with 0w40, why would a good medium be using mobil 1 5w40? would that even be a choice?
totally know nothing about oil so im really just asking and throwing it out there.....anyone can chime in?
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First off, BMW specs Castrol Edge Professional TWS, which happens to be a 10w60. They only spec that specific oil, not a specific viscosity. TWS happens to be 10w60.
Second, there is no Mobil 1 5w40 that's suitable for this motor. There's ESP Formula M 5w40 which is an emissions system protection oil for Mercedes, and Turbo Diesel Truck, a very lackluster oil for non-commercial diesel pickups.
Lastly, 5w40 doesn't strike a happy medium since 5w40s are effectively the same operational viscosity as 0w40s (because both are "40" weight at 100 C).