This post is for those of you who drive an old mercedes that has a slight to moderate, rythmic vibration in the drivetrain (that tends to be worse when power applied).

For six months I tried to fix a vibration in my 300CD (138k miles). Replaced many parts (motor/transmission/rear end mounts, rebuilt and balanced main driveshaft, new center bearing, new flex discs, repacked front wheel bearings). None of this solved problem. Finally I replaced half-axles with rebuilt units from Fast Lane ($200 each with exchange). Vibration now gone.

Message is check out the half-shafts. My car has been carefully driven and maintained so my guess is many other older mercedes need these axles replaced. Makes driving at speed so much more pleasant.

Nic in SC