Closing the Gap: How much does it matter?

Discussion in 'Ask An Owner Operator' started by Midnightrider909, Sep 18, 2019.

  1. roadmap65

    roadmap65 Light Load Member

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    I don’t know if you do Facebook but there is a group called the 9 + MPG Club that I have learned a lot from. This is their specialty
     
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  3. TallJoe

    TallJoe Road Train Member

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    It sounds too good to be true. Volvo ECMs are not very accurate with mpg. All 4 of them I've driven so far were showing at least + 0.5 mpg too much from what the real thing was. Still, even if you are staying above 9 mpg it is outstanding. I mean, getting 10 mpg is just too much to believe for any truck.
     
  4. Frontman

    Frontman Light Load Member

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    Post what mpg you get next 44k in the box.
     
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  5. jamespmack

    jamespmack Road Train Member

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    This is the funniest thing I have read all day. Any auto display will not be as close as pen and paper. SORRY BOSS.
     
  6. Long FLD

    Long FLD Road Train Member

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    I have a 2017 579 and based on what my dash says versus what it actually is on paper I’d say you’re closer to 8.5 to 9. That’s nothing to sneeze at either. But the computer isn’t as accurate as the “old tech” way of figuring mpg.
     
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  7. Midnightrider909

    Midnightrider909 Road Train Member

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    Volvo wouldn’t lie to me.
     
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  8. Midnightrider909

    Midnightrider909 Road Train Member

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    OK. Gonna do the math and see if I can trust the computer. At this point I have to know the truth.
     
  9. Midnightrider909

    Midnightrider909 Road Train Member

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    I will reset it when that day comes. The next load is 13K so my average might suffer a bit.
     
  10. Long FLD

    Long FLD Road Train Member

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    Get the Fuel Gauges app. It’s free. That’s what I use for mine. It’s easy to use. Keeps a running 90 day average for you also.
     
  11. ibcalm19

    ibcalm19 Road Train Member

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    Is that running across the Rockies or I-95 in Florida :rolleyes::rolleyes:
     
  12. Rideandrepair

    Rideandrepair Road Train Member

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    My old 99 Classic, w/ Detroit, on board computer lied like a drunken sailer. It progressively increased. 7.5= actual 7, 8.5= 7.5, 10= 8.5. I could always beat the cruise.It was the last of pre lo nox engines. It ended up averaging 6.5, heavy, and through hills, etc. I could get close to 8 on flat, loaded light. Soon as you hit the hills, down it went. No matter what.
     
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