❄️ Chill out with confidence! Safe for you and the environment. Silverhook's reputation you can rely on. Ready mixed for your convenience. Stay protected in extreme temperatures! Corrosion inhibitors for a longer life. Ethylene Glycol Corrosion Inhibitors Down to -33°C Silverhook Ready Mixed Blue Antifreeze is a high-performance coolant designed to protect your engine in extreme cold conditions, featuring an ethylene glycol formulation and advanced corrosion inhibitors. With a freezing point down to -33°C, this 4.54-litre coolant ensures your vehicle runs smoothly even in the harshest winters.