High performance coolant proven by independent dyno-testing to lower engine temperatures up to 17°C. Does not contain anti-freeze and is safe for use in motorsports and racing. Compatible with all types of glycol and water-based antifreeze. Improves engine warm-up operating in the most frigid environments. Hy-per Cool Super Coolant greatly improves the performance of your cooling system fluid, improving heat transfer and reducing overall coolant temperatures. Can also be used in systems containing only water. One bottle can treat up to 19 L of coolant.