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

terrible MPG!! :(

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Old 04-26-2013, 12:32 AM
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Default terrible MPG!! :(

New to this forum....
Anyway Im getting anywhere between 10-12 mpg in town and 13-14 hwy... what can i do to bump it up? what are you guys getting? truck is in the sig
 
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Old 04-26-2013, 04:06 AM
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i'm getting around 13-15 city and 24-26 hyway.
i'm not to familiar this tire sizes, but 35/12.5/r16, are these tires bigger than stock tires?
The weight of the vehicle also can factor into fuel milage, for example 4x4 can add weight.
But with my truck i have learned the way i drive can factor in the milage i get.
 
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Old 04-26-2013, 05:57 PM
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yeah 35s are bigger and wider than stock tire size
 
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Old 04-26-2013, 09:45 PM
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what gears are in rear ends
 
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Old 04-26-2013, 10:55 PM
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im not sure.... i cant find where it says anywhere. im pretty sure there 4:10s
 
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Old 04-27-2013, 03:40 AM
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If you look under the hood there should be a sticker with some info including gear axle ratio. At least there is on mine.
 
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Old 04-28-2013, 04:40 PM
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i have 3:54 gears

---AutoMerged DoublePost---

anyone?
 

Last edited by White96cummins; 04-28-2013 at 04:40 PM. Reason: Automerged Doublepost
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Old 04-29-2013, 08:08 PM
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what are your rpm's at 60 mph
 
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Old 05-02-2013, 12:31 AM
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16-1700
 
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Old 05-02-2013, 04:34 AM
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Do you run any fuel cleaner through your motor?
 


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