What oil does a 2001 Polaris Explorer 400 ATV use?

The 2001 Polaris Explorer 400 ATV typically uses a 10W-40 oil for its engine. It's important to use a high-quality oil that meets the manufacturer's specifications for optimal performance. Additionally, Polaris recommends using their own brand of oil or a compatible oil that meets the API service classification. Always check the owner’s manual for any specific recommendations or requirements.