Quote:
Originally Posted by macdrone
thermostat, cap on reservoir or crack in reservoir. I had to replace all of it due to hairline cracks. If the radiator had to be replaced bet your bottom dollar that plastic tank is toast and not holding pressure. If its not that id say your head gasket, thermostat or radiator are garbage. If you stay cool at speed the water pump would do enough at idle.
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How can it be losing pressure through hairline cracks if the coolant level doesn't change?