2005 duramax fuel mileage

Discussion in 'Chevy Truck Forum' started by Shooterrick, Nov 21, 2006.

  1. Shooterrick

    Shooterrick New Member

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    Whoa, 13mpg on good days!! What performance programer will positively effect fuel mileage the most??
     
  2. vanhal

    vanhal Senior Member

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    13 mpg

    hello there you should do much better wow it should be about 18 to 22
    are you running a dually 1 ton or a 2500 and pulling a trailer
    i have a 1500 350 gas and i get 13 pulling a trailer .........pete
     
  3. Shooterrick

    Shooterrick New Member

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    Pete, single axle, no trailer, no nothing, 2500. I traded a 250 Ford with 6.0 and was getting 18 around town with Edge Juice programer.
     
  4. STPETEBLUE

    STPETEBLUE Full Member

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    I average 13.5 mpg with my truck, completely stock. 90% in town. I drive it real easy.

    Hate to contradict on here, but no one can expect 18-22 mpg on a stock LLY in stop and go traffic. I can get 20 mpg on the highway at about 60 mph. Faster than that and it drops drastically.

    But I didn't buy it for it's economical mileage.
     
  5. Russ Weaver

    Russ Weaver Full Member

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    I bought an '06 Silverado 2500HD crewcab with the Duramax/Allison combo and I just got back from a 5,000 mile holiday to Arizona where the average mileage, pulling a 28' 5th wheel, was 12 MPG to the US gallon! Skootin' along in cruise at 60 mph w/o trailer I pick up 6-8 MPG at least (depending where the wind's coming from....In town, about 15-18 depending on how much of a hurry I'm in...I dunno....heavier? Higher diff gears? I have 6 speeds in my box...maybe that extra O/D?
     

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