oil consumption

Is it normal for a light amount of smoke/oil vapor to come from the intake plenum if you have driven your car for awhile? Engine hasn't really run for probably close to 6 months.. Gas tank is also half full and been sitting awhile. If not, what might cause this issue? And another question is...

I own a M6 2013 Convertible (V8 twin turbo), i bought it with 13k miles on it still under warranty and service, back in 2015. Ever since i got it i had to add 1 quart of oil every 350 miles, and i was told by the bmw service team that it was O.K. it is within their normal as it keeps driving the...

Hi all, We all know S85 consume oil, and it was due to loose setup of the piston ring. I have been checking rod bearing issue, and today I have learned that the clearance was .001mm which is too tight. Especially, for an engine that uses 10w-60 castrol tws. I am really surprised why BMW choose...