12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

Increase In Fuel Mileage

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Old Nov 21, 2010 | 12:39 AM
  #1  
zjohnsonua's Avatar
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From: Southern Indiana
Default Increase In Fuel Mileage

Since I moved to Indiana I'm up to 20mpg from 15ish in Alabama. I figured this by checking the fuel volume at fill-ups versus the odometer mileage. I've checked the odo, its consistent with how it measured before I moved. Nothing else has changed and the truck behaves the same. What could give this gain? I'm not complaining, but still, I'm very curious.
 
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Old Jan 15, 2011 | 07:57 PM
  #2  
Rodburner07's Avatar
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Im curious to mayb ill move to indiana to...I could sure use a 5mpg gain haha
 
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Old Jan 15, 2011 | 09:45 PM
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captain_stabbin's Avatar
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From: houston, tx
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i would think it would be worse, cause of the altitude change!
 
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Old Jan 15, 2011 | 10:19 PM
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12valvetater's Avatar
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Better fuel.
 
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Old Jan 15, 2011 | 10:28 PM
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From: illannyos
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are you doing more highway driving? Have your driving habits changed?
 
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Old Jan 16, 2011 | 02:15 AM
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Have you put injectors in the truck in the last couple thousand miles?? My fuel economy bumped up a little after a 1000 miles or so since they were new and not remans, remans use used springs and are already "broke" in but brand new ones will break in at different times and sometimes the pop off pressures will vary until they are all broke in
 
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Old Mar 13, 2011 | 01:40 PM
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UNOH-KID's Avatar
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From: lima ohio
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change in driving habits perhaps
 
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