Actually I finally took my diff apart today and it was EMPTY![X(] no diff oil at all.. Funny thing is that the case that enclosed the complete diff on my mantis is not wet like it was leaking or anything. Only thing I can think of is it had a slow leak and after me running it everytime I would just wash it off and maybe never noticed that it was wet around it and it eventually leaked all out. That it most likely my problem why it was spinning out easy. So I put new orings in it and filled up with 5k oil and we will see when I get it installed.