'Stock thermostat' presentation slideshows

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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