Whats more effective? With or w/o AC?

 

without! When you add the air conditioner, you are adding the additional stress on the engine to run the compressor. If your car is overheating, just turn on the fan, full hot & it will open up the heater core to accept maximum coolant & dissipate heat.

I do it at the track all the time & it's amazing how quick it can work (note*** if you do this while on the track & it's 102 degrees, you can have your shin cramp, which is not real fun... , so just turn on the defroster ventilation = same cooling effect, just real hot!)

Hope this helps-
BudMan

 

Thanks. Just what i thought!