How Many Liters of Antifreeze Are Needed for a Replacement?
2 Answers
Approximately 4 liters of antifreeze are required for a car's antifreeze replacement. Antifreeze prevents the coolant from freezing and cracking the radiator or damaging the engine cylinder block or head during cold winter parking. How to Choose Antifreeze: The basic indicators of antifreeze are its freezing point and boiling point. On the market, antifreeze comes in specifications with freezing points of -15°C, -25°C, -30°C, -40°C, etc. Generally, it is advisable to choose one that is at least 10°C lower than the lowest temperature in your region. Can Different Antifreeze Brands Be Mixed? It is necessary to use the same brand of antifreeze. Different brands may have varying production formulas, and mixing them could lead to chemical reactions between additives, rendering them ineffective. Antifreeze Replacement Cycle: For vehicles that operate for extended periods, such as taxis, high-quality antifreeze should generally be replaced once a year. Vehicles with shorter operation times can have their antifreeze replaced 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 particles, sediment, or signs of deterioration or discoloration are found in the antifreeze, it should be replaced promptly, and the system should be cleaned.
As an experienced driver for many years, the amount of antifreeze to replace depends on the vehicle model. Generally, 4 to 5 liters is enough for small cars, while SUVs or larger vehicles may require 6 to 8 liters. I usually prepare enough when replacing it, because after flushing the cooling system, you need to refill it with new fluid. It's best to refer to the capacity data in the vehicle manual. If you only add antifreeze without cooling water, you also need to consider the mixing ratio. Regular replacement is important, and it's recommended to check every two years or 40,000 kilometers to prevent engine overheating or corrosion. If you do it yourself, remember to replace it when the engine is cold for safety, and don't rush to drive out.
