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Removing the radiator fan to save gas this winter... 200

posted by  AOG on  Wed Mar 30 17:05 CST 2011
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last visit: Sun Feb 2 13:09 CST 2014
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Hi Rene,

I sympathize with you - I lived in the upper peninsula of Michigan for a year so I know what cold and snow is like! I ruined the transmission on my Mitsubishi driving 2 miles each way to work when it was 20 below zero and I was working night shifts. Extreme cold is very hard on the machinery. You know it's cold when your fresh 60% antifreeze gets frozen in 30 minutes!

When I began the experiment I thought that I could keep the fan off for 4 months over the winter. I've since reconsidered that. I think what I'll do next year is remove the fan in mid December and leave it off until close to Feb. 1st and see what kind of improvements I can get in fuel mileage. It certainly isn't ever going to be enough to offset all the enrichment that goes into warming up that cold engine, but maybe I'll see some kind of benefit. Honestly, the way I feel is that it MIGHT give about 1mpg. Before removing the fan I was clipping a piece of cardboard onto the front of my radiator to block half of the rad.

You're definitely right about how nice and quiet it is without the fan! And it did help speed up the warmup process. I won't go the measure of installing an electric fan, but I'll limit the time I keep the fan off and I'll keep the fan in the trunk just incase.





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