System Specifications

DIFFERENTIAL LUBRICANT

FRONT AXLE
Motorcraft SAE 80W-90 Premium Rear Axle Lubricant
Ford P/N XY-80W-90QL
Ford Specification WSP-M2C197A

REAR AXLE
FORD 10.50-INCH RING GEAR
Motorcraft SAE 75W-140 Synthetic Rear Axle Lubricant
Ford P/N XY-75W140QL
Ford Specification WSL-M2C192-A192-A

Motorcraft SAE 75W-90 Synthetic Rear Axle Lubricant
Ford P/N XY-75W90GLSGLS
Ford Specification ---

DANA S135 AXLES
Motorcraft SAE 80W-90 Premium Rear Axle Lubricant
Ford P/N XY-80W90-QL
Ford Specification WSP-M2C197-AC197-A

NOTE: Add 236 ml (8.0 oz.) of Additive Friction Modifier XL-3 (10.5 inch) or C8AZ-19B546-A (Dana 80) or equivalent meeting Ford specification EST-M2C118-A for complete refill of limited slip axles. Ford design rear axles contain a synthetic lubricant that does not require changing unless the axle has been submerged in water. Dana rear axles also contain a synthetic lubricant but do require a change.