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Random A/C question

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Old Apr 24, 2007 | 05:27 PM
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ixx
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From: 29 Palms, California
Random A/C question
Has anyone noticed a difference in mpg when using the a/c vs not? trying to decide whether or not to get the belt for it
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Old Apr 24, 2007 | 05:31 PM
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dieselJon
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From: Dixon, IL
on our gas E350 van it goes down maybe 2 mpg. Goes from 12 to 10 I think.

Jon
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Old Apr 24, 2007 | 05:39 PM
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rbrettctd
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I dont think the ac really bogs down the beast enough to hurt mileage.
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Old Apr 24, 2007 | 05:47 PM
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Originally Posted by rbrettctd
I dont think the ac really bogs down the beast enough to hurt mileage.
Kinda what I was thinking too. Not like a 4 cyl. that loses half its momentom when the compressor cycles.
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Old Apr 24, 2007 | 06:49 PM
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I've never noticed any difference. I can make a lot bigger difference in the use of my right foot than AC ever does. I think Mom might see a 1mpg difference in her 92 auto in the heat of August.

Daniel
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Old Apr 24, 2007 | 10:24 PM
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Originally Posted by dpuckett
I can make a lot bigger difference in the use of my right foot than AC ever does. Daniel
Daniel has it right. No difference in mine either, except when I have my foot all up in it.
These things have too much torque to notice a compressor cycling.
Joseph
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Old Apr 24, 2007 | 11:13 PM
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It's been proven that driving with your windows down hurts your mileage worse than the A/C will. Our trucks make so much torque that I never notice any difference at all.
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Old Apr 25, 2007 | 11:03 AM
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Originally Posted by mhuppertz
It's been proven that driving with your windows down hurts your mileage worse than the A/C will. Our trucks make so much torque that I never notice any difference at all.
On newer aerodynamic vehicles. None of those terms apply to our trucks. That said, with the Cummins I doubt there would be a reproducible difference.
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Old Apr 25, 2007 | 04:04 PM
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cool beans. thanks for all the responses. Look out A/C HERE I COME!!
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