Evans Powersports waterless engine coolant is designed for motorcycles. It has been used by race teams around the world for years to keep their engines safe, no matter what the conditions. They don�t pull over to let their engines cool down, and neither should you. Evans Powersports is a proprietary blend of glycols and inhibitors formulated to be used without water. Evans waterless coolants are compatible with Samco Hoses. **Cannot be used with regular coolant. System is flushed with Evans Prep Fluid (AB-60136) before Evans Waterless Coolant is added to the cooling system.