What type of oil for 2001 sportster?

For a 2001 Harley-Davidson Sportster, it's recommended to use a high-quality synthetic or conventional oil specifically designed for motorcycles, such as 20W-50. Always ensure the oil meets the API (American Petroleum Institute) standards, preferably with an "SG" or higher rating. Additionally, it's important to check the owner's manual for specific recommendations regarding oil type and change intervals to maintain optimal performance.