F 150 Heritage 4WD Pickup V8-5.4L SOHC VIN Z Bi-fuel (2004)
4. CAUTION: For Traction-Lok axles, first fill the rear axle with 118 nil (4 ounces) of specified Ford Additive Friction Modifier.
NOTE: Service refill capacities are determined by filling the rear axle with the specified lubricant to the specified level below the bottom of the
filler hole.
Fill the rear axle to the level shown with SAE 75W-140 High Performance Rear Axle Lubricant FITZ-19580-B or equivalent meeting Ford
specification WSL-M2CI92-A, and install the filler plug.
5. Lower the vehicle.
