Quote:
Originally Posted by Miller88
The odd thing is, this is a small aluminum engine with an electric fan that turns on *only* when needed. My Jeep, with a big cast-iron engine and mechanical fan that is ALWAYS spinning full bore ... warms up almost instantly. Never understood that one. Hmmm.
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The running the fan won't prevent the coolant from warming up because the fan only helps cool the coolant in the radiator--not the coolant in the engine. The coolant in the engine doesn't flow out to the radiator until the thermostat opens. Running the fan helps it warm up faster because it puts a load on the engine and t needs to burn more fuel.