CarPlan 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.

As an antifreeze…add Demon Cool to enhance and revitalise 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.