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

12 Valve Fuel Economy

  #21  
Old 04-25-2011, 12:41 AM
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if i granny it on the high way ive gotten 25, about 12 mixed city and highway, the worst ive gotten was 6
 
  #22  
Old 04-25-2011, 12:26 PM
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Originally Posted by UNOH-KID
if i granny it on the high way ive gotten 25, about 12 mixed city and highway, the worst ive gotten was 6
6mpg? must have run it pretty hard to get that

I havent got mine below 20, even the tank after I got my stack put in, and I had a really heavy foot the whole time, I got right at 21.
 
  #23  
Old 04-26-2011, 12:19 PM
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stock 12v with 4" lift 35X12.5 tires, long bed, ex cab with shell, 20-25 hwy @ 2k RPM'S =63 mph
 
  #24  
Old 04-26-2011, 05:39 PM
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Best I have got is 19 and the worst it 14.
 
  #25  
Old 04-26-2011, 05:50 PM
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I just ordered and M4 fuel pin from M&H inc and im super stoked should be ariving tomorrow how will this fuel pin effect my MPG i have a 1991 dodge D 350 automatic non-intercooled
 
  #26  
Old 04-26-2011, 06:00 PM
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Keep your foot out of it and you wont see any difference. Its all driving habits.
 
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  #27  
Old 04-28-2011, 01:19 PM
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I'm getting a #8 fuel plate. Can someone tell me how to set it up ?
 
  #28  
Old 04-28-2011, 10:44 PM
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ive gotten 20 on highway and worst was 9ish going 95 across idaho in bad headwinds... fuel gauge is broken i usually just fill up every 3-400 miles i went 330 miles on 35 gallons of diesel standing in -15 with a sign asking got diesel? finally just filled it up with tranny/engine oil and it got me to the nearest diesel station
 
  #29  
Old 04-29-2011, 05:37 AM
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Hi, i saw where used trany oil to get where you needed to get,back about 30yrs ago i put a
4 cly. nissan diesel in a 74 vega and ran out of fuel and what i used was motor&gas mix for a
chain saw to get home,my sister thought it wasa good idea to put gas in it one day did not
run very well drained tank,put diesel ran for yrs. no problems,not a good idea but it works.
 
  #30  
Old 04-29-2011, 10:29 PM
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worst i have gotten was a parade lap at jambo.... one lap about one mile and used 17 gallons of fuel... heheheh
 

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