- 1). Park the vehicle on level ground. Jack up the vehicle and lower it onto jack stands.
- 2). Locate the differential's drain plug. The precise location of the plug varies depending on the design of the differential, but the drain plug is typically located either on the back of the differential, meaning the part that faces the back of the vehicle, or on the front of the differential.
- 3). Remove the drain plug. Some drain plugs are simply a bolt, which you can remove with a wrench. Other drain plugs feature a recessed square center that is designed to accommodate the square tip of a 1/-2-inch-drive socket wrench. Insert the tip of the socket wrench into the plug and rotate it counterclockwise to remove it.
- 4). Pump the differential fluid out of the differential with a hand pump. Note that the hand pump is equipped with an inlet hose and an outlet hose. Insert the inlet hose into the differential through the drain plug opening and place the outlet hose in a container. Operate the pump until the differential is empty.
- 5). Insert a funnel into the differential through the drain plug opening.
- 6). Pour clean differential fluid into the differential with the funnel until the fluid level reaches the bottom of the drain plug opening. Take care to use only the recommended type of fluid. Consult the owner's manual to determine the correct fluid.
- 7). Remove the funnel from the differential. Tighten the drain plug with the appropriate wrench.
- 8). Raise the vehicle high enough to remove the jack stands. Lower the vehicle to the ground.
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