What are the differences between antifreeze of different colors?

[McReese]

Different colors of antifreeze indicate different types. In fact, the color is caused by adding dye to the liquid, which is only used to distinguish it from other liquids and has no other special functional purpose. It also helps users distinguish when choosing antifreeze to prevent mixing different types of antifreeze, which could damage the engine. The functions of antifreeze: Antifreeze is a coolant containing special additives, mainly used in liquid-cooled engine cooling systems. It has excellent properties such as preventing freezing in winter, boiling in summer, and protecting against scale and corrosion throughout the year. Can different antifreeze be mixed? The same brand of antifreeze must be used. Different brands of antifreeze may have different production formulas. If mixed, chemical reactions may occur between multiple additives, causing them to become ineffective. How to choose antifreeze: The basic indicators of antifreeze are freezing point and boiling point. On the market, antifreeze comes in several specifications with freezing points of -15°C, -25°C, -30°C, -40°C, etc. Generally, it is advisable to choose one with a freezing point at least 10°C lower than the lowest temperature in your region. Antifreeze plays an important role in long-distance vehicle driving.