Originally Posted by bobblehead
You should be ok.
Try the redline and see if your gas consumption improves or not.
The bmw oil Castrol 5w30 seems to burn oil faster than Motul. I switched to that on my 2011 550 and that's what I noticed. Not sure if this would have the same effect on our M car.
But the owners manual says that 5W-40 is okay to use? (As long as its LL01 and ACEA A3/B4)