There’s the belief among some that the engine coolant can go through the radiator too fast and not have enough time to dissipate its heat or that it’s passing through the engine too fast to pick the heat up. This belief probably originated via the observation that removing the thermostat can cause the engine to boil over faster.
It's above 90°F the A/C is on, temp gauge has moved from normal to almost too hot, what can be done?
Automotive cooling systems use "system pressure" to affect cooling functions. The action of the pump pushing coolant through the engine against restriction creates pressure.
Do you know your coolant pump drive ratio? You can find it by dividing the diameter of your crankshaft pulley by the diameter of the water pump pulley.
Evans Waterless Coolants are hygroscopic. Hygroscopic is defined as "tending to absorb moisture from the air."