if you have your heat on in your car, will it help the engine cool off more? thanks -max all the way!

 

Running the heat will take some away from the engine. If everything is working properly, the system will regulate itself stay right where Nissan designed it to. If the car starts to overheat, turning on the heat is the best way to try to keep it under control.

If you're question was under normal conditions, will using the heat reduce the engine temp any, then the answer is no.