Reply to thread

Message: <blockquote data-quote="E46Fanatic" data-source="post: 350702" data-attributes="member: 81"><p>For the rate of oil disappearance encountered by some, and the lack of tell tale signs such as smoke or oily tail pipes, its unlikely caused by blow by.  Some theories include oil evaporation due to the higher operating temps of the N52 or sludge formation due to valvetronic mechanism which relies of air actuation and air flow causes oil foaming/frothing, which impacts the oil and cause sludge (probably the reason valvetronic engines need different BMW LL oil certification).  So far there has been no confirmation.  I wish BMW would disclose something on this issue.</p></blockquote><p></p>