Need to top-up your Antifreeze between services? Let the Demon do the work! Demon Cool is a universal top-up antifreeze and coolant suitable for use in all vehicles (both petrol & diesel) and mixes with all colours of antifreeze already in the radiator/expansion tank. Ready to use formulation also contains a rust inhibitor, giving protection for up to 5 years. As an antifreeze add Demon Cool to enhance and revitalize the qualities of the original antifreeze, providing exceptional performance in all driving conditions. As a coolant Demon Cool can also be left in the system as a coolant and inhibitor, protecting against rust for up to a maximum of 5 years. The synthetic process and additive package within Demon Cool provides exceptional year round protection whilst offering a superior corrosion resistance over extended service periods. Ready mixed with de-ionised water for added convenience Winter protection down to -36ºC Meets BS6580 (2010) & ASTM D3306 Protects all types of engines Directions for use: Whilst engine is cold, remove cap from radiator or expansion tank Check antifreeze level If necessary, just pour in Demon Cool to fill level as recommended by the vehicle manufacturer. Replace cap. Note: It is recommended to check antifreeze levels on a regular basis. Key Features: Want the best showroom finish for your car in a fraction of the time? Let the Demon do the work Universal top-up antifreeze and coolant suitable for use in all vehicles - both petrol & diesel Mixes with all colours of antifreeze already in the radiator/expansion tank offering winter protection down to -36°C Add Demon Cool to enhance and revitalize the qualities of the existing antifreeze in the system.