Fluid - Differential

Rear Axle Fluid

Ford Part Name Motorcraft SAE 80W-90 Premium Rear Axle Lubricant
Ford Part Number XY-80W90-QL
Ford Specification WSP-M2C197-A

Note: Rear axles are considered lubricated for life when the vehicle is used from normal service. Add 4 oz. (118 ml) of Additive Friction Modifier XL-3 or equivalent meeting Ford specifications EST-M2C118-A for complete refill of Traction-Lok rear axles.