Prestone MAX Total Cooling System Cleaner, an innovative cooling system cleaner andcontamination remover. It increases system life and performance by removing build up, grime, corrosion and rust. Plus it eliminates any oil and fuel contamination that found its way in. Product Features:Increases System Life - Prevents OverheatingCleans Radiator, Heater Core, & HosesEliminates Oil & Fuel ContaminationFlush, Clean & Refill - Removes Buildup, Grime, Corrosion & Rust