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Originally Posted by weasel56
Correct, the OEM BMW oil is fully synthetic 5w-30, and BMW does recommend castrol. It takes about 8 quarts too. (she's thirsty!)
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Is that what you use for your beast weasel56? How much does one bottle of the OEM BMW 5w30 fully synthetic oil cost? Is it cheaper than Mobil 1 0w40? I assume I can't go wrong with either? Are there any advantages with using 0w40 instead of 5w30? I currently reside in Canada so we encounter warm and cold temperatures.