Redline Water Wetter Coolant Additive 12ozWaterWetter 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