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      10-23-2013, 03:56 PM   #71
Drives: 2008 E90 M3
Join Date: Sep 2013
Location: Canada

Posts: 264
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Is there anything special, unique, or unusual about the S65 engine that I don't know about? The engine in the 458 Italia, which is by far more high strung and potent than the M3 engine, takes 5w40 oil. The way I see it, if a 40 weight oil is good enough for a 458 Italia, it should be good enough for an M3. And since I have no warranty left, I'll be switching out in the next oil change. And no, I couldn't care less what BMW's official recommendations are.
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