I stopped by the dealership yesterday, and they had my trucks differential apart, they told me the gasket had been leaking oil, till it got to the point that it needed oil and it was making the ugly noise, When they moved the truck there at the dealership the gasket messed up comletely and it threw all the oil there, so today they are going to check the differential, to see what is messed up, hopefully i can convience the tech to throw in the 3.73's in there on the down low.