Ranger 4WD V6-245 4.0L VIN X SFI (1999)
Fluid - Transfer Case: Service and Repair
1. CAUTION: If the proper fill procedures are not followed, transfer case failure can result.
NOTE: Fluid level should be just below the fill plug.
Remove the fill plug from the rear of the transfer case, and check the fill level.
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If the fluid is below the level, fill with Motorcraft MERCON Multipurpose Automatic Transmission Fluid WSP-M2C185-A or MERCON
equivalent fluid.