this is the first time that seal went out, ever. its the oem seal. what i was talking about before was that i flushed the tranny and filled it back up then i noticed it was leaking (i noticed it before that beacuse i changed the oil pan gasket and had some trouble with it leaking but i used rtv and two JB oil stop leak treatments and it was fine but i noticed the half shaft had oil all over and on the side of the pan so im going to change that as well as the one on the other side). but i still need to know if i can put like the penzoil gl-5, or the like quakerstate gl-5 in it which i hear is fine in trannys with lsd, how ever i dont know if mine has an lsd.