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Old 09-26-2008, 03:05 PM   #6 (permalink)
PaleMelanesian
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Join Date: Dec 2007
Location: Texas
Posts: 1,479

PaleCivic - '96 Civic DX Sedan
Team Honda
90 day: 74.33 mpg (US)
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The bigger the difference between inside and outside temperature, the bigger the heat loss between the two. The ac running the whole time has to overcome the perpetual loss. If you turn it off, it only has to overcome the temperature gradient one time when it comes back on. It's almost always better to turn it off when not needed.
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- - - - -Best 11-mile commute: 105 mpg
- - - - -Best tank: 88.5 mpg / 1133 miles
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