i have a 99 ram 1500 4wd has 60,000 on it, that has a mysterious leak. prior to figuring out where it was coming from i replaced all seal in transfer case and in transmission. i then figured out it was coming from the pan gasket so i replaced filter and gasket and it still leaked. i then went to dealership and bought one of there gaskets, took it to a friend who is a former chrysler mechanic he cleaned out vent tube (it was clogged) and installed a second pan gasket and using rtv. two days later its leaking again from around pan gasket. Any suggestions I NEED HELP!