-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 -Improves heat transfer and reduces cylinder head temperature -May allow more spark advance for increase power and efficiency -Use one bottle for most passenger cars and light trucks, treats 3 to 5 gallons or 13.2 to 15.9 liters. Vehicles with larger cooling systems should use two bottles. Small cooling systems should use 1oz (3 to 4 capfuls) per quart -Compatible with new or used antifreeze (including DEX-COOLTM and long-life versions) to improve the heat transfer of ethylene and propylene glycol systems -Satisfies ASTM D2570 and ASTM D1384 corrosion tests for glycol-based antifreezes