What type of oil is used in a 2001 Chevy Express van?

A 2001 Chevy Express van typically uses 5W-30 motor oil for its gasoline engines. It's important to check the owner's manual for specific recommendations, as oil specifications can vary based on the engine type. Synthetic oil can also be used for improved performance and protection, but ensure it meets the required specifications. Always confirm with the manufacturer's guidelines for the best results.