Automotive antifreeze is liquid that is added to the engine cooling system to prevent water from freezing and to protect the system from corrosion. They are especially important in regions where temperatures can reach negative values, as freezing water can cause serious damage to the engine. In addition, antifreeze also helps keep the cooling system clean and prevent the formation of deposits that can clog the pipes. It is important to choose the correct antifreeze for your vehicle, following the manufacturer's specifications, and replace it periodically to ensure effective protection.