General Procedures - Differential Draining and Filling

Materials

Draining

1. 1
   Position the vehicle in NEUTRAL on the lift.
   Refer to: Jacking and Lifting - Overview (100-02 Jacking and Lifting, Description and Operation).
2. 2
   Remove the RDU fill plug.

   

3. 3
   Remove the RDU drain plug and allow the RDU fluid to drain.

   

Filling

1. 1
   Install the RDU drain plug.
   Torque: 25 lb-ft (34 N·m)

   

2. 2
   Fill the RDU with clean RDU gear lubricant.
   REFER TO: Specifications (205-02 Rear Axle/Differential, Specifications).
   Material: Motorcraft® SAE 75W-85 Premium Synthetic Hypoid Gear Lubricant / XY-75W85-QL (WSS-M2C942-A)

   

3. 3
   Make sure the RDU gear lubricant level is at the bottom of the fill plug opening.

   

4. 4
   Install the RDU fill plug.
   Torque: 25 lb-ft (34 N·m)