Quote:
Originally Posted by Zippster
I think he (OP) wants to know what weight oil. It's a good question. I would probably go with what the dealer said they put in it. I think the 5W 30 is less expensive, so that might be the what and why they used it. My .02
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Ah, OK. I put Mobil 0w 40 in as a top up, it's good stuff. I used 5w 30 in 1m but I had to replace every 1500miles. With Mobil 1 driven the same way, including a track session for 2hrs, it's not lost a drop. I've yet to drive the m2 long distance, track and road but all my cars run Mobil 0w 40, which everyone says is almost like a 0w 30, and I've had no issues.