What type of oil does a 1999 dodge ram 1500 use?

A 1999 Dodge Ram 1500's recommended oil type depends on the engine it has. You need to check your owner's manual for the specific recommendation. However, generally speaking, they typically used SAE 5W-30 or 10W-30 conventional or synthetic motor oil. The manual will specify the weight and whether conventional, synthetic blend, or full synthetic is preferred. Always refer to the owner's manual for the precise recommendation for your specific truck and engine.