Transmission service question/ pan

[sfran]

Originally Posted by Jeepwm69

I would think adding an aftermarket plug would result in leaks over time. How does this plug go into the oil pan? Short of dropping my pan, drilling a hole, and welding in a threaded bung I can't see the plug not leaking.

I put a drain plug in a 700R4 transmission in my Camaro 12 years ago. It came with a shift kit I had put in it. I have never had a leak since doing it. You do have to drop the pan, drill it, clean it real good. But once it is done, servicing the transmission is a breeze! Mine was a double threaded plug. In other words, the inside piece slipped through the drilled hole and screwed into the outside piece. The inner is hollow, call it the bung, so a bolt screwed into that, which is the drain plug. No welding at all, and never a leak. If it is done right they shouldn't leak.