Quote:
Originally Posted by MightyMirage
If the thermostat shuts coolant flow thru the engine off until it's hot, how do you gain efficiency? Asking for a friend...
I do like the EGR valve idea, maybe you could copy DOAX idea and heat the oil pan and trans ?
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You gain efficiency because you are still circulating coolant through the engine with the thermostat closed, just not through the radiator. Coolant is always flowing through the engine, weather the thermostat is open or closed. This is why you can get heat before the thermostat opens. Does this answer your question?