Quote:
Originally Posted by LarryHughes
Wayne - You usually provide excellent advice. In this case, though, would you please explain how a lower temp thermostat, e.g. 160F, would provide cooler temps than the standard temp thermostat, e.g. 187F, once the coolant temp is above the fully open standard thermostat, e.g.190F? It seems to me that cooling system thermal capacity is the limit, not a throttling by the thermostat.
BTW, I do run the 160F thermostat and don't see any difference in normal operating temps in hot Florida weather.
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The thermostat set the minimum temperature the vehicle will run at in a stead state, not unlike how the thermostat in a house sets its minimum temp. So in traffic, the car would start from a lower temp, taking a bit longer to get hot, and then would cool back down to the lower steady state temp once air flow returned to the radiators. So the stat definitely has a throttling effect.