Non-evaporating. With additives that protect against rust and prevent limescale deposits. Compatible with all other radiator antifreeze. Suitable for aluminum. Foam-restricted. mixing ratios Protection down to -20°C: mix 1 lt with 2 lt water. Protection down to -27°C: Mix 1 lt with 1.5 lt of water. Protection down to -40°C: Mix 1 lt with 1 lt water.