Thread: DIY Oil Change with some photos
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      08-26-2020, 07:05 PM   #41
Aronis
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Originally Posted by MikeStammer View Post
so what are people's thoughts on 30w vs 40w?
BMW is pretty set on using the correct oil. They will test oil if you engine has an issue that may be oil related. I'd stick with what ever BMW says.

Mike
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