System Specifications

REAR AXLE FLUID
Motorcraft SAE 80W-90 Premium Rear Axle Lubricant

Ford P/N XY-80W90-QL
Ford Specification WSP-M2C197-A

NOTE: 4X4 vehicles exposed for prolonged periods to temperatures less than 40° F (-40° C) should change out the rear axle fluid to Motorcraft SAE 75W-140 Synthetic Rear Axle Lubricant, Ford part number XY-75W140-QL meeting Ford specification WSL-M2C192-A.