What’s your MPG’s while loaded?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by 2013Maxx, Mar 13, 2021.

  1. 2013Maxx

    2013Maxx Light Load Member

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    Jan 17, 2018
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    What kind of MPG’s are y’all getting out of your truck while loaded? I’m getting about 6.5-7 mpg running 65mph with about 30k pounds behind me in my ‘13 ProStar. Is that good?
     
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  3. 401-Alex

    401-Alex Light Load Member

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    Nov 25, 2013
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    But what specs do you have ? Is it a direct drive? Or OD what rear end? It all could be calculated if you stated what rpm running at what speed. You could have the same truck getting much worse mpg just due to bad gearing. Or way better due to where its specked and running
     
  4. 2013Maxx

    2013Maxx Light Load Member

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    Jan 17, 2018
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    10spd Eaton with 3.55 rear gears. 1400rpm at 65mph
     
  5. Happily Retired

    Happily Retired Road Train Member

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    high plains colorado
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    I have to chuckle, in 50 years, EVERYTHING about trucks has changed, except fuel mileage. We were getting 6 and 7 mpg 50 years ago. :dontknow: I wouldn't complain about 7 loaded, seems right.
     
  6. 401-Alex

    401-Alex Light Load Member

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    Fro10c 10spd?
    I have a rtlo18913a 13spd .78 od
    3.55 rears
    1550 @70 i get about 5.5 to to 6.5 depending on load truck is old at 1.6 mil.
     
  7. Ffx95

    Ffx95 Road Train Member

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    We would have more now but they took the sulfur out.
     
  8. AModelCat

    AModelCat Road Train Member

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    Well gotta dose that DPF too!
     
    Last edited: Mar 13, 2021
    shooter19802003 and Brettj3876 Thank this.
  9. Brettj3876

    Brettj3876 Road Train Member

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    Canceling cancel culture/CCC
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    My mpg hovers around 7.00 if i keep it 65. Saw as high as 7.8 if i run 70 then it's down to about 6.2-6.3

    I cruise around 1550-1650 that's what mack recommends. I run double over .62 but that's pretty much flat/empty gear. Brings it down to 1400 at 65. I get better mpg at 1600 loaded because i can stay out of the boost more.
     
    tommymonza Thanks this.
  10. Rickp

    Rickp Medium Load Member

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    Spokane, WA
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    Not sure what you were driving and for who, but 30 years ago we got bonuses for getting 4mpg and most guys couldnt do it.
     
  11. Wasted Thyme

    Wasted Thyme Road Train Member

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    10 speed Eaton sucks for fuel economy. I get around 8.6 mpg in a T680 with a 12 speed Eaton and 7.2 with the 10 speed. Both set at 62 MPH.
     
    Trucker61016 Thanks this.
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