Red Line WaterWetter Features Unique agent for cooling systems that doubles the wetting ability of water Rust and corrosion protection allows for use of straight water in racing or reduced antifreeze levels in warm climates Designed for modern aluminum, cast iron, copper, brass and bronze cooling systems Improves heat transfer and reduces cylinder head temperature May allow more spark advance for increase power and efficiency Satisfies Astm D2570 and Astm D1384 corrosion tests for glycol-based antifreezes Treats 3-5 gallons Contains no ethylene glycol