[HEI451]

I see LOTS of misinformation about the efficiency and application of electric fans here, all straight from the con job over hype advertizing and outright "don't really understand the way it really works, but" mantra.

Electric fans are NOT exponential in their operation, they are linear, temp hits one place on the sensor, fan goes on, another level, fan goes off. Electric fans do not have the ability to spin at different rpm levels in their operation, and are not specific for one temperature level. That is fact.

Engine driven fans, especially ones that use an air conditioning clutch fan, are exponential. The ones with a fan clutch, A/C or not, slip when the coolant is cool, tighten up as it heats, and, the fan clutch and fan, all of them, spin different rpm's with varying engine speeds (rpm"s). That is exponential, varying, not single speed linear.

And, a very narrow operating temperature band is essential for engine operating efficiency, too cold, or too hot, thermal efficiency, fuel economy, and drive-ability suffers greatly, engine component wear becomes excessive.

As I said, lots of the misinformation straight out of the con job hype from electric fan manufacturers here, way, way too much of it.