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Anonymous
BMW recommends their brand of synthetic oil for their cars (I don't know how far back), but also "settle" for:
Wiki User
The kind that you put in it
5W30
5w-30
5w30
5w30 synthetic
5w30 or 10w30
10-30
5W-30.
According to the 2002 Lincoln Navigator Owner Guide : ( 5W-20 engine oil is recommended )