Quote:
Originally Posted by Tylub
basically the vents stay open and whatever air temperature is outside will come into the car, (after it's been slightly warmed up by the engine bay heat of course). Every car is like this. the reason when the temp. dial is turned to heat is more dramatic is because now the heat from the engine bay is now blowing into your cabin... thus = free heater without wasting your gas turning on the heater.
:happy0180:
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Using your heater doesn't use more gas. A heater in effect recovers waste heat from the engine and discharges it into the cabin instead of sending the heat to the radiator to be lost to the outside air. In fact, if your engine is overheating you can turn on your heater to help cool it down.