I have a 1991 Civic with a 1.5l eng and 5-speed trans. The trans drain bolt is stuck, and the bolt head is rounded off, have even tried vise grips and a pipe wrench, so now it's basically round. Do I dare heat it with a torch to try to break it loose? Or does anyone have a easier fix?
Thanks!

 

Doesn't it have a square hole in the center? It's designed to be removed with a 3/8" ratchet with no socket on it.

 

If it is a bolt, how about an extractor socket? Tap it on with a hammer and use a breaker bar to get that bolt free. Just replace the bolt after removing of course.

 

Thanks for the suggestions guys. It does not have a 3/8 socket hole, just a standard head. The car came with a 4-speed and the 5-speed was put in later, so someone probably replaced the drain bolt along the way.
There is no room to hammer on a socket, as the suspension arm bracket is in the way. It seems the only way to get to it is a wrench. The bolt is steel in an aluminum case. Will it hurt the case to heat it with a torch to break it free? Or any other ideas?

 

If there is a chance for you to grind the rounded head, turn it into a square so that a standard wrench can grip on it better.