Penray 1112-12PK Cool Tec 2 - 12-Ounce Bottle, Case of 12 Neutralizes Acids, Inhibits Rust and Scale Designed to Lubricate the Water Pump Stabilizes Conventional and Extended Life Automotive Coolants Protects Entire Cooling System Including Radiator and Coolant Sensors Allows Different Coolant Types to be Mixed Within One System Neutralizes Acids, Inhibits Rust and Scale Stabilizes Conventional and Extended Life Automotive Coolants Protects Entire Cooling System Including Radiator and Coolant Sensors Allows Different Coolant Types to be Mixed Within One System