A few funnies I have read on a few BMW sites in the last few days:
1) BMW knows what they are doing, 15,000 miles are fine for oil changes, synthetics can go 25,000 miles plus.
2) Don't waste your money on Mobil 1, the BMW Synthetic is a better oil.
3) Don't use Mobil 0w-40 it is to thin for you engine, you should be using the 5w-30 which is thicker.
4) Related to 3. You should use Mobil 1 5w-30 in the summer and 0w-40 in the winter.
5) Mobil 1 is not real synthetic anymore, castrol sued them and they stopped making real synthetic.
Cary
1) BMW knows what they are doing, 15,000 miles are fine for oil changes, synthetics can go 25,000 miles plus.
2) Don't waste your money on Mobil 1, the BMW Synthetic is a better oil.
3) Don't use Mobil 0w-40 it is to thin for you engine, you should be using the 5w-30 which is thicker.
4) Related to 3. You should use Mobil 1 5w-30 in the summer and 0w-40 in the winter.
5) Mobil 1 is not real synthetic anymore, castrol sued them and they stopped making real synthetic.
Cary