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What Causes BMW Antifreeze Coolant Leak?

1 Answers

SanPhoebe

07/30/25 8:51am

Reasons for antifreeze leakage: Cooling system sealing issues: Loose seals at the connections between the antifreeze reservoir and radiator in the cooling system can cause leaks. Pipe problems: Aging or cracked pipes may lead to antifreeze leakage. Radiator issues: Corrosion in the radiator can result in antifreeze leaks. Introduction to Antifreeze: The full name of antifreeze should be antifreeze coolant, meaning it is a coolant with antifreeze properties. Antifreeze prevents the coolant from freezing and expanding in cold winter conditions, which could crack the radiator or damage the engine cylinder head. Many people think antifreeze is only used in winter, but in fact, it should be used year-round. Antifreeze is a special additive-containing coolant primarily used in liquid-cooled engine cooling systems. It offers excellent performance in preventing freezing in winter, boiling in summer, and resisting scale and corrosion throughout the year. Precautions for Antifreeze: Pay attention to the quality of antifreeze when using it. If the antifreeze is of poor quality or even counterfeit, it will not serve its intended purpose. Coolant is prepared by mixing antifreeze with water in a certain ratio. Automobile manufacturers usually specify the mixing ratio for different low-temperature antifreeze grades in the user manual and also designate the antifreeze model, which should not be mixed.

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