Ultralife Red will protect all engines from frost damage right down to –40ºC (at 50% of total coolant volume). It also provides outstanding protection against rust and corrosion for all parts of the cooling system and is therefore recommended for all year round use. This Ethylene Glycol based antifreeze, which uses Organic Acid technology, is free from nitrites, amines, phosphates, borates and silicates. When used at the correct concentration coolants based on Organic Acid Inhibitor Technology are capable of providing extended operation compared to conventional antifreeze. This can be for up to 5 years or 250,000km in passenger cars and 500,000km in commercial vehicles, depending which is reached first.