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I took out the radiator fan a week ago. Initial results are about 1mpg improvement. I've been monitoring the engine temp with an aftermarket temp gauge hooked up at the thermostat The truck heats up faster and runs around 160 to 180 in this cold. That's probably up a few degrees from where it would be with the fan, but I'm surprised how well it cools itself driving 45mph down the highway. Makes me wish I had yanked the fan years ago! I'll see how hot it gets when the summer gets here~ might either have to put the fan back on or do the electric fan conversion.
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