I am hesitant to even raise this question as it seems quite contentious but here goes: now that I have my new alradco radiator installed and running cooler than stock (about 10-15 degrees) is it even worth considering installing a 160 or 180 thermostat as a replacement to the stock 195 degree? The ONLY reason I'm considering it is because, as I understand it, the thermostat only starts opening when the engine coolant temp (NOT the radiator temp) reaches 195. If that's true, I kind of like the idea of having the thermostat open earlier to let all that "cooler" coolant in my aluminum radiator circulate through the engine block. I realize you are supposed re-program the fans to come on earlier but seeing that they only come on at idle and go off once you start moving again, I am more interested in keeping the coolant temp down while I'm actually driving (racing) the vehicle - hence the question about the pros & cons of a 180 or 160 thermostat? Is it worth it? I'm thinking probably not a). because I live in a coolish climate (Michigan) and b). the car is already running 10-15 degrees cooler than stock but, of course, I have this nagging feeling that perhaps I could do a wee-bit better. Your thoughts/recommendations?