How Many Kilometers Before Changing Antifreeze Normally?
2 Answers
Antifreeze is generally changed every two years, though some suggest 4-5 years or longer. Follow the owner's manual for guidance. If no specific interval is stated, determine the need for replacement based on the antifreeze's freezing point or condition. Antifreeze Replacement Intervals: For vehicles with prolonged operation, such as taxis, high-quality antifreeze should typically be replaced annually. For vehicles with shorter operation times, replacement every two years or every 30,000 kilometers is sufficient. To prevent excessive foaming, which reduces heat exchange efficiency between the antifreeze and engine components, ensure the product is within its validity period when adding it. Long-life antifreeze can remain effective for up to three years. If suspended particles, sediment, or signs of deterioration/discoloration are observed in the antifreeze, replace it promptly and flush the system. How to Check for Low Antifreeze Levels: Monitor the antifreeze warning light on the dashboard. If illuminated, it likely indicates low antifreeze levels, though it could also signal excessively high cylinder temperatures. Inspect the antifreeze reservoir. If the level is below the minimum mark (MIN), do not continue driving; add antifreeze immediately. Check the water level markers on the antifreeze tank. The normal antifreeze level should be between the maximum and minimum marks. If it falls below the minimum mark, it indicates a deficiency.
I'm a car enthusiast myself and have been driving for over a decade. There's no absolute mileage for coolant replacement, but it's generally recommended to change it every 50,000 to 80,000 kilometers or every 2 to 3 years, depending on your car model and driving habits. If you frequently encounter city traffic jams, consider changing it earlier; if you rarely drive on highways, you can delay it slightly. I've seen many people wait too long to change it, resulting in degraded coolant that turns dark in color, leading to radiator corrosion or engine overheating, which can cost thousands to repair. It's advisable to check the coolant level between Min and Max during each maintenance and replace it immediately if the color changes from bright to cloudy. Nowadays, there are long-life coolants that can last up to 100,000 kilometers, but regular minor maintenance is more hassle-free. Coolant affects the entire cooling system, so I prefer to change it every 2 years to ensure safety, especially in winter when preventing freezing is crucial.
