Hence to gauge the
Differential for noise or vibration, and absence or crack on the gear teeth and the presence of metal particles in the oil you start by emptying the container. Now, unbolt the differential case cover from the axle housing as well as the differential unit. Wipe off any debris from the mating surfaces of the cover and the housing After that apply a thin bead of silicone sealant in the axial housing. Torque the cover bolts in a star like fashion to ensure that they meet the recommended torque, freshen up the oil levels in the axle and for few minutes, take the car for a spin around the workshop. Last, but not the least check for any leakage of water.