How often should car antifreeze be added?

[DeReese]

Antifreeze should be added every two to three years. 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 preventing scale and corrosion throughout the year. Method for replacing antifreeze: The lower part of the radiator, the lower part of the engine, and the small radiator inside the car can be drained clean. It should be noted that after draining, the vehicle should be started for 5 seconds and then turned off (when the engine is cold). Precautions for replacing antifreeze: Generally, when replacing antifreeze, if it is the same type (either ether or ethylene glycol), there is no need to worry about draining it completely. If different antifreeze is being replaced, you can add clean water 1-2 times after draining the old antifreeze and run the engine before adding new antifreeze. This minimizes the content of the original antifreeze. Even if the water is not completely drained, it does not matter because all antifreeze contains water. After replacing the antifreeze, pay attention to testing the specific gravity, as too high or too low is not good.