Good Maintenance Practices:

• Check and change your transfer case fluid as often as recommended in your owner's manual or by your vehicle's manufacturer. Always use the type of fluid as recommended by these sources as well. Replacing transfer case fluid will minimize premature wear or damage caused by contaminated or worn out fluid.
• Do not overfill your transfer case. Too much fluid within the transfer case can hinder performance and harm the system. Always use the amount of fluid as recommended in your owner's manual or by your vehicle's manufacturer.
• Do not directly power wash your transfer case output seals. High pressure water can overcome the seals and contaminate the transfer case fluid. Contaminated fluid will decrease the life of the transfer case and should be replaced.