Red Line Supercool concentrate is fortified with Water Wetter reducing engine temperatures by up to 10-20 degrees C. Designed to maximise the performance of a the cooling system and provide superior protection. Dilute the concentrate with distilled water and it will protect the entire cooling system against cavitation, corrosion and erosion.Water Wetter provides superior heat transfer properties reducing cylinder head temperaturesSuitable for cast iron, aluminium and brass systemsRed Lines propriety coolant additive formula enhances the fluids ability to transfer heat, helping to reduce operating temperaturesReduces coolant temps by up to 10-12°CAll makes / all models / any coolant colourPetrol and diesel enginesSupercool fortified with Water Wetter will protect your entire cooling system keeping any new components like new for 5 years or 150,000 miles, while also helping prevent any further damage to older components.Supplied in 1 US Gallon bottle, which equates to 3.785 litres