I'm little concerned...
Are you saying that all 2012 build vehicles use oil, and some 2013?
Is it just the 650i CV or the 640i and how about the M6?
and do we have any ideas what causes it?
My Freind's 2000 M5 used much oil due to elliptical oil rings, but that was changed on the 2001 models...
03 M5/ 02 540/ 01 M5/ 00 X5 4.4/ 99 M3/ 95 M3
"If you do what you've always done, you'll get what you've always gotten." Tony Robbins