I have a '91 940 turbo 127,000 miles with multi-link rear suspension..
when I put weight in the back ie. rear passengers or groceries,
on occasion when I go around a corner, I feel a strong vibration
comming from the back end of the car and at low speeds, i can hear
and feel one of the rear tires chirping. If i floor it and break the
tires loose, it will go away for a while, but eventually comes back. I also feel a slight power loss and an pull to one side upon acceleration. once the load is gone, the vibration goes away and all is well? Help..

I feel that possibly my locking differential is getting sticky, the dealer
of course suggests taking it apart and inspecting it $$$$ and will probably suggest replacemnt of the whole thing. Any suggestions on putting red-line synt. oil or any other thoughts on what it could be would be greatly apprecitated.

scott