Quote:
Originally Posted by gsrbri
BMW wants 0W-30 in the car, so I'm sticking w/the factory recommendation - I'm just changing it more frequently. If it needed a thicker oil they would have specified it for different conditions (hot weather, track) Every current turbo M engine uses this oil viscosity and they all carry a 50k mile warranty, so that's enough reason for me.
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Would this lead to more carbon build up though? That's not going to be BMW's problem at 50k or less miles.