How many liters of antifreeze should be added to a car at one time?

1 Answers
AlanMarie
07/30/25 12:33am
A car typically requires about 4 liters of antifreeze per refill. Antifreeze prevents the coolant from freezing and causing damage to the radiator or engine cylinder block/head during cold winter parking. How to choose antifreeze: The basic indicators of antifreeze are its freezing point and boiling point. Market options include -15°C, -25°C, -30°C, and -40°C freezing points. Generally, select an antifreeze with a freezing point at least 10°C lower than your region's minimum temperature. Can different antifreeze brands be mixed? Always use the same brand of antifreeze. Different brands may have varying production formulas, and mixing them could cause chemical reactions between additives, rendering them ineffective. Antifreeze replacement cycle: For vehicles with extended operation periods (e.g., taxis), high-quality antifreeze should be replaced annually. Vehicles with shorter operation periods can be replaced every two years or 30,000 kilometers. To prevent excessive foaming that reduces heat exchange efficiency, ensure the product is within its validity period when adding. Long-life antifreeze can last up to three years. If suspended particles, sediment, discoloration or deterioration appear in the antifreeze, replace it immediately and clean the system.
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