[motorcritter]

I found also that proper prep and
making sure the pan sealing surfaces were straight and true went a long way toward eliminating leaks before they started. The only OEM that I remember to use or recommend sealant was Chrysler on their FWD units. I use composite cork gaskets (usually OEM) and take it easy on the bolt torque. If I've for a transmission out of the vehicle, I reseal it as a matter of course. Shift shafts, governor covers, servo covers, speedo outlets all leak, of they aren't already, they're going to. Also, those rubber clad metal framed gaskets (I know Frod uses them, I've seen them on recent GM units, too) are probably the best evolution of trans pan sealing. If they've got any frets or damage, put another one in- ain't cheap, but pretty much set and forget.