How many years can the original coolant last?
2 Answers
The quality of the original coolant is very good and can last for a long time. It should be replaced every 100,000 kilometers or more. It is worth noting that the quality of the original coolant is indeed excellent, so do not replace it unnecessarily to avoid waste. Coolant is a liquid containing special additives, mainly used in liquid-cooled engine cooling systems. It has properties such as preventing freezing in winter, boiling in summer, and protecting against scale and corrosion all year round. Ordinary coolant should be replaced every two years because its effective period is two years. Expired coolant can cause cylinder corrosion and, in severe cases, even serious damage to the engine. For commercial vehicles, due to the longer mileage, the replacement cycle is shorter.
I've been driving for many years, and generally, the original coolant can last anywhere from 2 to 5 years, depending on the car and driving habits. The factory-installed coolant is of good quality, but over time it oxidizes and loses its cooling effectiveness. From my own experience, it's best to change it every three years or so, especially if you frequently encounter city traffic jams or long-distance driving, as high temperatures and heavy loads can cause it to degrade faster. If you don't change it, the engine may overheat and seize, and in winter, it could freeze, making it difficult to start. It's best to check the manual every two years or simply inspect the coolant color in the reservoir—if it appears cloudy or dark, it's time for a change. This kind of maintenance keeps things worry-free and safe.
