How often should car coolant be changed?

[Clyde]

Car coolant generally needs to be replaced every 20,000 kilometers or two years. More information about coolant is as follows: 1. Coolant: The engine coolant is an important substance for car cooling. 2. Function: Coolant has antifreeze properties, preventing the radiator from cracking due to coolant freezing. 3. Other functions: The coolant should be replaced once every year of driving. It protects the engine cooling system from corrosion, effectively prevents scale formation, avoids overheating of the car radiator, and provides long-term comprehensive protection for the radiator. 4. Bleeding: It is essential to bleed the system when replacing new coolant.

[VanBrayden]

I've driven several cars before, and the timing for coolant replacement can't be generalized. My experience is that changing it every three years or around 40,000 kilometers works well. But the main thing is to check your car's user manual, as requirements vary by model. Some new cars with long-life coolant can last up to five years. I make it a habit to do a simple check every year—pop the hood to see if the coolant is clear and the level is between the marks. If it turns cloudy or shows signs of rust, it's time to replace it sooner. Failing to replace it in time can lead to coolant degradation, which corrodes the radiator and water pump. In summer, this may cause overheating and breakdowns, while in winter, poor antifreeze performance could freeze and crack the pipes, resulting in expensive repairs. Doing it yourself is also safe—just stay vigilant in daily maintenance.

[Jim]

After purchasing my car, I carefully reviewed the owner's manual, which clearly states that the coolant should be replaced every two years. I drive a Honda, and that's what the manual specifies. Different brands may vary, but strict adherence protects the engine cooling system. The manual emphasizes using manufacturer-recommended antifreeze types to avoid corrosion from mixing. I keep track of the schedule and set reminders for replacement. Regularly checking the fluid level and condition, and addressing deterioration promptly, can prevent overheating risks—safety first. Developing this habit from the start with a new car helps avoid major issues.

[VanKaden]

I enjoy maintaining my car myself, and changing the coolant is quite simple—I do it every two years. Just grab a wrench, open the radiator drain valve to drain the old fluid, flush it clean, and pour in new antifreeze. Buy OAT-type or one compatible with the manual's recommendation, ensuring the color matches. Regularly check the fluid level between Max and Min, topping it up if it's low. It saves money and time while helping you understand your car's condition and prevent corrosion or overheating. The tools are simple, and the process isn't hard—you can easily handle it yourself.