Re: 06 wk grinding
Also the friction modifier gets depleted over time. If not changed the diff fluid for a long time, i would just put new fluid in with the right amount of friction modifier in it. The grinding noise you hear/feel is the differential lock which is activated due to the speed difference between both front wheels in a turn. With the friction modifier ( also called limited slip additive), a certain amount of slip is possible in the diff lock, allowing the speed difference between the two front wheels. Without the friction modifier, the diff locks completely, making both front wheels rotating at the same speed and making one or both wheels hop when making (tight) turns.