GC™ North American Yellow Super Extended Life Prediluted Antifreeze/Coolant is an Hybrid Organic Acid Technology (HOAT) ethylene glycol-based coolant with an inhibitor package that uses organic acid technology (non 2-EH) with stabilized phosphate inhibitors. It does not contain any nitrites, amines, borate, or silicate. It is specifically designed to be used in any North American light/medium/heavy duty applications required Yellow colored fluid to provide long-lasting, complete protection for all cooling system components.