How Often Should Antifreeze Be Replaced?
1 Answers
For vehicles that operate for extended periods, such as taxis, high-quality antifreeze should generally be replaced once a year. For vehicles with shorter operating times, replacement can be done every two years or every 30,000 kilometers. To prevent excessive foam formation, which could reduce the heat exchange efficiency between the antifreeze and engine components, ensure the product is within its validity period when adding it. Long-lasting antifreeze can remain effective for up to three years. If suspended particles, sediment, or signs of deterioration or discoloration are observed in the antifreeze, it should be replaced immediately, and the system should be cleaned. Types of Antifreeze: Antifreeze is generally categorized into three types: ethanol-water, glycerin-water, and ethylene glycol-water. How to Choose Antifreeze: The key indicators for antifreeze are its freezing and boiling points. Market-available antifreeze comes in specifications with freezing points of -15°C, -25°C, -30°C, and -40°C. It is advisable to choose an antifreeze with a freezing point at least 10°C lower than the lowest temperature in your region. How to Check if Antifreeze is Low: Observe the antifreeze warning light on the dashboard. If it lights up, it likely indicates low antifreeze levels, though it could also be due to excessively high engine temperatures. Check the antifreeze reservoir. If the level is below the minimum mark (MIN), do not continue driving and replenish the antifreeze promptly. Inspect the water level markings on the antifreeze tank. The antifreeze level should normally be between the maximum and minimum marks. If it falls below the minimum mark, it indicates a deficiency.
