Transmission (NV 4500 5-Speed)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 1992 Dodge Ramcharger, 1992 Dodge Ram Wagon, 1992 Dodge Ram Van, 1992 Dodge Pickup, and 1992 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
Use Castrol Syntorq SAE 75W-90 synthetic gear lubricant. Manufacturer specifies Syntorq as the only lubricant to use in NV 4500.