Several factors could contribute to this phenomenon, indicating potential issues with your vehicles cooling system. Why do i smell antifreeze outside my car Blown head gasket a head gasket is a seal between the cylinder head and engine block that prevents pressure losses and engine fluid leaks Also, this head gasket can get blown for various reasons, which can cause your antifreeze to leak and make you smell antifreeze outside your car. Antifreeze is made up of glycol and other additives that give it its protective benefits as well as a strong but pleasant aroma Unfortunately, the same qualities that make it an effective automotive fluid also make it quite dangerous.
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