How Often Should the Coolant Be Replaced?

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Coolant should generally be replaced every 2 years or 40,000 kilometers. Below are detailed explanations about coolant (antifreeze): 1. Definition: The full name of coolant is antifreeze coolant, meaning it is a cooling liquid with antifreeze properties. Coolant prevents the liquid from freezing during cold winter parking, which could otherwise cause the radiator to crack or damage the engine cylinder block or head. 2. Functions: Engine coolant has characteristics such as antifreeze, anti-boiling, anti-corrosion, anti-scale, and being foam-free. It is not affected by seasons or regions. 3. Quality Standards: The primary measure of coolant quality is its antifreeze performance. Water freezes at 0°C, while standard coolant can typically reach -40°C. High-quality coolant should achieve around -60°C, which is an important indicator of its quality. Another factor is the boiling point of the coolant. Water boils at 100°C, whereas coolant should reach at least 108°C. In other words, the lower the freezing point and the higher the boiling point, the greater the temperature range, indicating better coolant quality.