HELP! 4kq Transmission whine

[Mason Bender <mbender@freenet.columbus.oh.us>]

Dear Quattrophiles-

I am currently experiencing a transmission whine at low speed.  The noise
is speed dependant, but it is independant of brakes and engine.  The dealer is
suggesting $1000 worth of work replacing the rear output bearing in the
transmission.  

Has anyone else experienced low speed transmission whine?  I am tempted to
try some Redline MT90 before spending big bucks on a new tranny.

Any insites are much appreciated,
Mason B