I'm not sure and have been searching but cant find anything to convincing one way or the other. I dont believe its the axle seals or the main seal. I think that the bell housing is leaking, its all tight I'm going to pressure wash the transmission while in the car and then fill it up and run it to see where its leaking. Now if it is leaking from the casing is there a seal of some sort that has to be replaced or do I JB weld the casings together.?.? even though that wouldnt be a good idea in the long run if I have to replace any internals if I JB weld it.