View Poll Results: LB7 Duramax local driving fuel economy (55-65 mph)

Voters
1245. You may not vote on this poll

  • less than 15 mpg (US gallons) (55-65-mph)

    97 7.79%

  • 15-16 mpg

    251 20.16%

  • 17-18 mpg

    337 27.07%

  • 19-20 or more mpg

    376 30.20%

  • Don't own an LB7 - just interested in the poll data

    184 14.78%
Results 1 to 20 of 114

Thread: 2001-early 2004 LB7 Duramax Fuel Economy Poll

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  1. 11-27-2009, 16:50 #1
    BigBlockTank's Avatar
    BigBlockTank
    BigBlockTank is offline Enthusiast
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    Feb 2009
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    Tucson, AZ
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    28

    Default

    I get about 16-17 MPG on my 6.6 DuraMax with 9850 mi.
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  2. 12-03-2009, 20:28 #2
    pamax
    pamax is offline Newbie
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    Sep 2001
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    Northeast, PA 16428
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    I have been getting 17 to 19 mpg with 81,583 miles on my 01 crew cab.
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  3. 01-27-2010, 12:39 #3
    Centurion6R's Avatar
    Centurion6R
    Centurion6R is offline Enthusiast
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    Dec 2009
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    Ft. Wainwright, AK
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    i've been getting around 18-20mpg with my 01 in roughly -20 degree weather...pretty darned good.
    '01 2500HD 4x4 C/C short bed 6.6l "Tessie" Superchips Flashpaq, K&N intake, Exhaust? We don't need no stinkin' exhaust.
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  4. 03-17-2011, 04:07 #4
    DBradley
    DBradley is offline Newbie
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    Mar 2011
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    Macon, GA
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    Default LB7 fuel mileage

    I am a new diesel owner, bought a 2001 GMC K3500 Dually. I have added PPE programmer, S & B cold air kit, and 4" silverline turbo back exhaust. The truck just rolled 100,000 miles on it. I also use Stanadyne performance fuel additive. My mileage increased to around 17 or 18, now all of a sudden can't seem to get any better than 15. Any ideas?
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