Heres my case, I have a 92 lude with 160 k miles on it and my 3rd gear use to grind every shift until one time it stopped going into 3rd i have been driving it around like this for almost 6 months. I feel like my car is not worth having anymore and i hate to drive it now. So once ur tranny gives u problems FIND a way to fix it as fast as possible cuz if ur like me ($broke every day of the week$) u will be driving around with one of the most annoying problems u can have.
Also when i changed my oil i looked on the tranny housing and noticed 96k written on it with yellow paint like it was rebuilt or a used one.