Anyone who has tackled heater core replacement will tell you they’d rather have an all-night root canal than have to perform this dreaded task. Heater core leakage begins with the subtle aroma of ...

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 ...