Quote:
Originally Posted by JoeyBimX5din
The M's run 10/60, so we will see what happens with 15w50. I have had it in the truck for a good bit of time now.
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the higher weights were designed for the high revs 'M' NA motors...
tons of info on F10 M5 board
stick with the user manual recommended BMW LL01 0w40, 5w40