Fundamental of cooling
The Fundamental of cooling operations regarding thermostats is as follows. With the radiator, engine block, and overflow tank we have app. 17.2 quarts of a 50/50 mixture of antifreeze and water to cool our engines. A few quarts reside in the engine block the rest outside the engine. A thermostat, by closing, separates these two circulation areas whereas the block will heat its own water first until it reaches the thermostat opening temperature.
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