The VR-12 is the first and only coolant additive which is Eco friendly. This organic coolant additive is designed to reduce the temperatures of your cooling system and with its anti corrosion additives it will also protect your cooling system from rust, corrosion and electrolysis.VR-12 will protect your cars cooling system from corrosion and rust, it will also reduce your coolant temperatures while you preserve the planet.This is the only 100% green product on the market currently. It is concentrate of organic chemical components which are mixed through a synergetic process.The VR-12 can be added to any brand or any colour type of coolant, one bottle of VR-12 will protect up to 13.6 litres of any coolant, the ideal ratio is 1:24.473ml Bottle