Not to add to the rain but ... I have an appointment next Tuesday for the oil pump chain and also the timing chain. The engine developed the characteristic low whine noise and my indi (they work on Rollers, Bentley, Porsche, BMW etc. ) diagnosed it as oil pump chain drive. Needless to say I trust their diagnosis. The plan is to start with removing the valve cover and inspect the cam ledges for any damage from oil starvation. If the results are optimistic then do the timing and oil kits. The whole thing will be COSTLY....thank God I am still within the 7 year/70000 miles extended warranty!
They warned me that the starvation would not trigger low oil light or give any other warning except the whining noise (which you cannot hear when music/audiobook is on).
My car is a very "babied" 2013 328i with only 34000 miles. NEVER beat on, no performance upgrades,OCI 5000 miles
at the dealer, all maintenance items done with a solid safety margin ahead of miles/time.
Last edited by Palantir; 01-24-2020 at 02:00 PM.