Automobile antifreeze actually has various colors, such as green, blue, red, yellow and so on. So which one should we choose when doing maintenance and replacing antifreeze? Which color is more suitable? Let's take a closer look.
First of all, let's find out what antifreeze is for. Its full name is automobile antifreeze coolant, which is a very important temperature control component to ensure the normal operation of the engine, because the engine temperature must be kept at 80~90 degrees to work normally. But the combustion of fuel in the engine will definitely be higher than this temperature, so the primary function of antifreeze is to prevent the engine from overheating. When the engine is overheated, it will conduct heat and dissipate it. The cold weather in winter will make the engine reach the normal working temperature quickly, and the antifreeze will play a role in keeping the engine warm.
It can be seen that automobile antifreeze can not only cool the engine, but also play a role in heat preservation. Working in various environments such as high temperature and low temperature, antifreeze itself needs to have good adaptability to the environment. Moreover, antifreeze itself should be able to prevent high-temperature boiling and low-temperature condensation; If the antifreeze boils at high temperature, the engine will have problems in heat dissipation, and if it freezes at low temperature, it is easy to explode.
Then why do some antifreeze have many colors? This is related to its composition and function. The antifreeze is mainly composed of three components, namely water, antifreeze and additives. The main difference is that there are generally three kinds of antifreeze, mainly ethanol, ethylene glycol and glycerol. The colors of these three antifreeze solutions will be slightly different. For example, ethylene glycol is green glycerin type; Secondly, they have different freezing points and different cold tolerance. Although the color of antifreeze will affect the overall color of antifreeze; But the anti-sports liquid that can be seen and bought on the market now will actually have more colors. Everything is colorful, and some are antifreeze with fluorescent powder. But these can't really explain its composition and which color is better.
In other words, we don't really need to consider which color is good when buying antifreeze for cars. Different colors are more to distinguish different types and brands of antifreeze, and to prevent antifreeze from being confused with other things such as glass water and mineral water. It is also necessary to prevent accidental drinking, because some antifreeze additives contain toxic ingredients.
How to choose antifreeze service for your car? First of all, the quality of antifreeze mainly depends on its freezing point and boiling point. Especially in winter, the freezing point of antifreeze should be at least lower than the local temperature of 10 degrees Celsius. Generally, antifreeze bottles will be marked with freezing point, which is better to choose. Secondly, the standard for judging good or bad is to look at the grades of anti-corrosion, anti-rust and waterproof scale, but it is difficult to judge these before use. Therefore, in order to reduce this misjudgment, it is suggested to choose some big brands of antifreeze as far as possible. Third, try not to choose concentrated antifreeze, because concentrated antifreeze is actually mixed with water, which is easy to produce scale and corrosion. Try to buy mainstream, universal antifreeze, ready-to-use The manufacturer has prepared it for you. Just add it directly after buying it.
Finally, can this antifreeze be mixed and added? Personally, I don't recommend mixing. Different brands, different freezing points and different colors cannot be mixed, although some antifreeze have the same main components; However, don't ignore their secondary components. It is possible that after mixing, the secondary components will react chemically, which will cause the change of freezing point. It is also possible that chemical reactions produce corrosive agents and colloids, which will cause damage to the cooling system and the engine.
The above views are only personal. Welcome everyone to communicate, share and learn together. Thank you.