My first post, I'm Jim,
I have a 1983 300SD (Parts car) with a transmission that 200,000 miles on it, The problem is as follows, reverse will not work at all and it will barely go forward, It takes a lot of RPMS to get it to even move. If I can repair the problem I would like to go that route, Any ideas? The fluid is fine.
I did a transmission searched but found very little and nothing that will help me.
Thank You ahead of time!

1990 350SDL 248,000 Daily
1984 300SD 241,000 Daily
1983 300SD 220,000 Parts car