IML: rear end noise

["Chris Strohmeyer" <chrisstroh@xxxxxxxxxxx>]

Hi all,
My sure grip rear end is moaning/whirring at above 30mph. If I lift my foot 
slightly off the pedal it goes away completely.  After looking over 40 years 
of receipts I discovered 10 years ago and 10k miles ago the rear end was 
completely rebuilt.  I read that there's a "special oil for sure grips". 
Isn't this just 90w gear oil?  It was a little low so I topped it up but no 
change.

Any ideas as to what this may be. I'm going to contact the former owner to 
see if rebuilding it actually made the noise go away.

Thx,
Chris
67 Imperial Convertible 



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