Recommended Transfer Case Fluid: NP-205
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.
Engine oils labeled for API service SF or SF/CC may be used in this transfer case. SAE viscosity grade may be SAE 30.