Manual Transfer Case:
F-350s equipped with a manual transfer case typically require either SAE 5W-30 or SAE 75W-90 gear oil. The recommended oil viscosity may vary based on the specific transfer case model and climate conditions.
Electronic Transfer Case:
F-350s with an electronic transfer case usually require a specific type of fluid, such as Ford Transfer Case Fluid XT-10-QL or an equivalent meeting Ford specifications. This fluid is formulated to provide adequate lubrication and protection for the electronic components within the transfer case.
Automatic Transfer Case:
Some F-350 models feature an automatic transfer case, which requires a specific automatic transmission fluid (ATF) specified by the manufacturer.
Dual Transfer Case Models:
F-350 trucks that come with a dual transfer case setup (4WD and 4x4 systems) may have different oil requirements for each transfer case. Consult the owner's manual for specific recommendations.
It's essential to follow the manufacturer's recommendations regarding the type and viscosity of oil used in the F-350 transfer case. Using the wrong type of oil can lead to decreased performance, premature wear, and potential damage to the transfer case. If in doubt, always refer to the vehicle owner's manual for the exact specifications and recommendations. Additionally, it's advisable to have the transfer case oil changed at the recommended intervals specified in the maintenance schedule.
