* 5W-30: This is a common viscosity for many engines, especially in moderate climates.
* 10W-30: This is another common viscosity, possibly recommended for hotter climates or older engines.
Do not rely on this information alone. Consult your owner's manual for the correct oil type (including weight and API certification) and capacity for your specific 2001 Dodge Ram 1500 engine. The wrong oil can seriously damage your engine.