GC™ European Violet Super Extended Life Prediluted Antifreeze/Coolant is a Silicate Enhanced Organic Acid Technology (Si-OAT) ethylene glycol-based coolant with an inhibitor package that uses silicate Enhanced (Non 2-EH) organic acid inhibitors. It does not contain any nitrates, amines, borate, or phosphate. It is specifically designed to be used in any European light/medium/heavy duty applications required Violet colored fluid to provide long-lasting, complete protection for all cooling system components.