>>1) Use an A3 and/or BMW LL-98/01 approved oil. Mobil 1 10w-30 does not meet these requirements. Oils that do are BMW Branded Synthetic 5w-30, German Castrol Syntec 0w-30, Mobil 1 0w-40, Amsoil European Car Synthetic 5w-40, and some others.
Ive just recently become aware of the importance of...