I had a pretty good leak in my auto-tranny for my 93. I removed the skid plate and cleaned off the bottom of the tranny with some brake cleaner. I started my vehicle and let it run for about 10 minutes or so. I shut the jeep down, and looked back under the vehicle. I did not notice any leaking from the vent or front, I made my inspection to the back and noticed a small hole dead center in the casing, just after the tranny mount, but before the transfer case. It was leaking pretty good. It doesn't seem to be a crack or anythng. In fact it looks something like a weep hole. The hole is about the diameter of a # 4 sheet metsl screw, maybe a bit smaller. Whatever it is, I believe I may have a blown seal somewhere near the leak. Not sure if its in the transfer case or the end of the transmission. Can anyone give me any insight as to what this hole may be? It seems to be originally machined that way.