1999 mercury cougar overheating new thermostat.. not leaking antifreeze only leaks through the overflow when car stops but doesnt over heat... antifreeze resvuior always seems to be under pressure?

In: Mercury Cougar [Edit categories]

perform a compression test to check for leaking head gasket- you may have caught this before any major damage occurs,

First answer by Race51. Last edit by Race51. Contributor trust: 8 [recommend contributor]. Question popularity: 1 [recommend question]

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Car leaking antifreeze -not overheating-no heater?