i just put a 180 degree t stat in my truck and the heat gauge wont even get halfway between 130 and 210. is this too cool? im satisfied with my heater but im wondering if this is too cool for the engine to run at all the time

 

The general consensus is there is no point is using a cooler thermostat unless you have a tuner. All it will do is drop your fuel economy a little. I don't think it will hurt anything though.