I actually filled my tranny while it was on ramps (which means the 'fill point' was not level, so have more fluid than necessary in the tranny). Been driving that way for around 4,000 miles now. Checked the level today (on level ground) and of course, it dumped out. Since I didn't have a drain pan handy, I quickly put the plug back in, so the tranny is still overfilled.
Just curious as to what potential damage could be done with an overfilled Getrag box? I know an overfilled auto tranny will foam the fluid and cause slippage, but didn't know if na overfilled manual tranny is detrimental??
When you've run out of mods, it's time to get something new.