Wynn's Radiator Cleaner Oil SP47241 is a specialized 325ml treatment designed to effectively remove oil sludge, grease, and other deposits from automotive cooling systems. This high-performance cleaner restores the cooling system's heat exchange efficiency, preventing overheating and ensuring proper engine function. It is formulated to be safe for all types of radiators and cooling system components, including rubber hoses and gaskets. Regular use helps maintain the longevity and performance of the cooling system.