Evans Coolant EC42001 EC10064-2 Prep Fluid and NPG Race Track Specialty Coolant, 2 Gallon Combo Pack with Funnel Combo Pack contains two 64 oz. bottles of Evans NPG Waterless Coolant with a 1 gallon bottle of Evans Prep Fluid for a complete coolant swap Evans NPG Waterless Coolant is specifically designed for Racing venues that allow propylene glycol based coolants, but not ethylene glycol and food service equipment where ethylene glycol products are contraindicated Evans Waterless Coolants have a boiling point above 375 Degree Fahrenheit and will not vaporize, eliminating overheating, boil-over and after-boil, while generating very low vapor pressures reducing strain on engine cooling system components Evans Prep Fluid is a waterless cooling system flush designed to seek out remaining water after draining the cooling system of an engine, helping remove any residual water Water removal is critical as a water content higher that 3% will lower the boiling point, and may reduce the corrosion and pump cavitation protection of Evans Waterless Coolant