What make of oil for a 1982 Honda cb900f?

For a 1982 Honda CB900F, it's recommended to use a high-quality motorcycle oil with a viscosity of 10W-40, specifically designed for four-stroke engines. Look for oils that meet or exceed API service classifications such as SG or higher. Synthetic oil can also be used for better performance and protection, but ensure it is compatible with wet clutches if applicable. Always check the owner’s manual for specific recommendations.