What makes todays new Extended Life antifreeze blends different?
A. Extended Life antifreeze does not contain non-organic silicates as corrosion inhibitors. Rather, it contains 100% organic materials called carboxylates, which tend to stay in solution better over time than silicates. If/when carboxylates become insoluble, carboxylate gels are far less abrasive then silicate gels, thus not causing damage to the water pump. This allows an extended service interval of 5 years for vehicles which started with Extended Life antifreeze as factory fill.
