116,7xx. No problems yet, haven't changed the fluid and I don't think I will start now
FWIW, I don't have it in front of me, but a ford brocheure from the service dept said certain contour year slushboxes didn't need a change ever!
While replacement ATX's aren't cheap, the MTX-75 seems to have a much higher fatality rate (3rd gear syncro anyone)
-Pete