>>28574108
I've never heard of an auto pissing out its own fluid unless it's got a bad gasket or seal somewhere. I've had my own ATF leak out before, but only because of pinhole leaks in the cooler lines that lead from the tranny to the front where the cooler is located.

Trannies definitely get hot when crawling, if your transfer case has a low range I'd suggest using that to give your torque converter a bit of a break. Failing that, your diff ratio might be in need of a change if you're going to be climbing regularly.

Inspect any drain or fill plugs on the bellhousing too, I had some dribbling out of mine once but it was only because the overflow plug wasn't totally snugged down. Check the threads for damage too. Might be leaking under high pressure/expansion but not under regular operating temps.