RAY: I’d have to disagree with your mechanic. I think flushing it out is worth a try. TOM: The easiest thing to do is to reverse-flush it by hooking a hose up to the heater core and pushing water ...

Cabin leaks that leave your carpets soaked or your windows fogged rarely start at the floor. They often begin inside the dashboard, where a small radiator called the heater core can quietly dump ...