What are the main components of antifreeze?

[SanWyatt]

The main components of antifreeze are 50% purified water, 40% methanol, and 10% other substances. Classification of antifreeze: Antifreeze is generally divided into three types: ethanol-water type, glycerol-water type, and ethylene glycol-water type. The basic indicators of antifreeze are freezing point and boiling point. In the market, antifreeze comes in several specifications with freezing points of -15°C, -25°C, -30°C, -40°C, etc. It is generally advisable to choose one that is at least 10°C lower than the lowest temperature in your region. Antifreeze replacement cycle: For vehicles that run for long periods, such as taxis, high-quality antifreeze should generally be replaced once a year. For vehicles with shorter running times, replacement can be done every two years or every 30,000 kilometers. To prevent excessive foam formation, which can 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 have a validity period of up to three years. If suspended matter, sediment, or signs of deterioration or discoloration are found in the antifreeze, it should be replaced promptly, and the system should be cleaned.