Used as directed, offers superior performance in virtually every light and heavy duty application. The proprietary inhibitor package is low silicate and phosphate and 2-EH free. Can be used as a top-off but to achieve maximum protection a complete flush and fill should be performed. iLast Premium Heavy Duty Antifreeze provides protection against: • Freeze-up/Boil Over • Scale Build Up • Sludge/Clogging • Wet Sleeve Liner Pitting • Rusting • Corrosion Advantages • Meets Light Duty ASTM D-3306 and Heavy Duty ASTM D-6210 • One product for Light Duty and Heavy Duty applications. • Perfect choice for mixed fleets. No need to add SCA's. • Blended with pure De-Ionized water for your quality needs. • Safe for use with all engine metals, including aluminum. • Phosphate free and low silicate - suitable for European and Asian models. • Light Duty - 5 years/150,000 miles • Heavy Duty - 3 years/300,000 miles. • Compatible with hybrid and OAT coolants - including Dexcool™ • For safety purposes all iLAST antifreeze is blended with a bittering agent.