E70 30D M57 Valve Stem Seals

[Muzimak]

Good day Bimmer Fanatics, anyone ever had to change Valve Stem Seals on these models? I'm experiencing a little of annoying smoke during idle. Thanx in advance.

 

[Solo Man]

What is the mileage? I have had a bit of smoke on idling on some of my previous cars with m47 and m57 motors after removing the cats and some mild tuning (unichip). Have never heard of valve stem oil seals on a BMW diesel giving trouble. Would not worry about it too much if the smoke is not white which indicates water.