Recommended for use in all makes and models of foreign and domestic passenger vehicles and light duty trucks; Contains a proprietary formulation of premium corrosion inhibitors that provide extended protection against rust, corrosion and pitting caused by cavitation for all coolant system metals; Provides excellent protection against temperature extremes, preventing freeze-up down to -37C and boil-over to 129C (with a 100 kilopascal {15 psi} radiator cap in good condition; Does not impart any colour change if mixed with another engine coolant; The superior performance and stability of the premium extended life corrosion inhibitors allows them to go on working well beyond the lifetime of traditional products; Guarantee: Up to 5 years or 250,000 km protection whichever comes first when added as initial fill or when added to a well maintained, clean coolant system after a complete drain, flush and fill; Meets the performance requirements of ASTM D3306 and JIS K2234.