Mine will only ever burn oil if you let it idle for 10+ minutes and then rev it up. Nothing on cold start either. Next thing I'm gonna do is replace all the plastic pcv lines and the stupid fuel tank vent pipe with silicone tubing
My friend's M6 pretty much burns oil on acceleration after idling for more than 2 minutes. Pretty bad stuff. I measured crankcase vacuum and got 66 mBar of vacuum. Spec on S63tu is 50 mBar.
We're thinking that one of his internal pcv is bad. It just sucks that injectors gotta come off for a valve cover job