The recommended oil weight for a 2000 Dodge Ram 1500 conversion van depends entirely on the engine it has. The owner's manual is the definitive source. Look for the section on maintenance or engine specifications. It will specify the recommended oil viscosity (weight), such as 5W-30, 10W-30, or something else.
Without knowing the engine size (e.g., 3.9L, 5.2L, 5.9L), it's impossible to give a correct answer. Using the wrong oil weight can damage the engine.
