Almost two years ago, I was in a hurry and went to a drive through convenience oil change place for service on my 1996 Jeep Cherokee. Important detail: this vehicle is equipped with an Aisin AX 15 manual transmission. I asked for an oil change and transmission fluid change and the service was performed.
They put synthetic gear oil in the transmission, but I didn’t notice until this month that they used the wrong kind. If you put a gear oil with sulfur in it into a synchronized transmission, what do you get? You get bad synchros.
And that’s what I now have: a transmission that doesn’t like first gear or reverse anymore.
Do I have any recourse here, since it took almost 2 years for the damage to be noticeable and for me to trace back the cause of the damage? Or will I have to eat this mistake?
I don’t think you have any recourse here. The vehicle is 22 years old with unstated thousands of miles on it. The "incident " was almost 2 years ago. And even though you state “for me to trace back the cause of the damage” you haven’t. There are several causes for your problem including age and normal wear. And even a couple that have nothing to do with the transmission itself (clutch, master/slave cyl. etc.) So just what did you actually trace the cause of damage back to? Nothing more than a guess. Good luck.