Hey Guys,

My 1992 500E has started making a squealing sound which I think may be the belt tensioner pulley. The squeal started right after I had a new serpentine belt installed and the coolant flushed. From what I have read here, it's more likely the pulley rather than the water pump.

Question: Is it bad to drive with this? What are the possible scenarios--pulley seizes, belt snaps, wreaks underhood havoc, etc.?

I have read that some have managed to force lubricants into the bearing race of the pulley--is this possible? Is white grease appropriate for this?

Your advice is appreciated!

Kirk
1992 500E
Pearl black/gray
71K miles
Bone stock