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