I am very happy to read this!
My 89 has the problem too.... I was kicking the idea around of replacing the fluid, which would be a mild pain in the arse cuz I just got the interior back together + a ripper shifter installed......
At a stop it is a bear to get into gear, but moving its ok....
My motor mounts will be done very soon!
I'll post here after to let know if worked..
paul