Had a friend one time take his dad's forerunner out four wheeling one night in the mud only to get it stuck to the frame. Well, called a friend to come out to help and he drove a Z71 Chevy. Long story short he was doing the same thing you're talking about and had the trans fluid boiling out of the dip stick tube within a couple of minutes. Both of them came up to work wondering if my truck was there and if I could help. Got the forerunner out and towed the Z71 to the shop and pulled the trans. Burned the manual low clutches right out of that thing.