Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la
If it fails: lemon-manuals.org.ua

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Fluid - Differential

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

Note: Vehicles exposed for prolonged periods to generators less than -40 Celsius (-40 Fahrenheit) should change out the rear axle fluid to Motorcraft SAE 75W-140 Rear Axle Lubricant, Ford part number XY-75W140-QL meeting Ford specification WSL-M2C192-A.