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Losing Antifreeze With No Apparent Leak


Whenever a vehicle loses antifreeze, also known as coolant, the usual expectation leads the owner to check for evidence of leaks at all the coolant connections and components. Obvious coolant leaks can usually be found in the form of puddles left on the pavement. A more mysterious coolant loss problem involves no evidence at all of leaks or puddles, yet shows a definite reduction in radiator coolant levels.


If the head gasket on the vehicle has weakened or burned, it can crack or blow open a water jacket that sits in proximity to the top of the combustion chamber. Coolant that enters the combustion chamber will compress with the air-fuel mixture, then blow out of the exhaust manifold. The coolant, which has now pressured and turned to steam, travels through the exhaust pipes and muffler system, …