Transfer Case Service Intervals
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 1989 Dodge Ramcharger, 1989 Dodge Ram Wagon, 1989 Dodge Ram Van, 1989 Dodge Pickup, and 1989 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
Light duty service requires transfer case servicing (fluid drained and refilled) every 37,500 miles. Under normal heavy duty conditions, service transmission every 36,000 miles.