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Old 06-09-2010, 11:05 AM   #8 (permalink)
YamahaR6
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Here's a theory:

AC cooling off the engine?? - Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com

Quote:

The dual fan theory may be closer to right. Most of these vehicles equipped with a/c will have a dual fan setup with one dedicated to the condenser. So it is likely that the second fan would and may be cooling the car a little more.
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