Fuel Reserve Experience

Discussion in 'Peterbilt Forum' started by CYPE74, May 14, 2024.

  1. CYPE74

    CYPE74 Bobtail Member

    2
    2
    May 14, 2024
    FL
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    New 2024 Peterbilt 579 X-15 day cab with a 90 gallon tank, after the fuel reserve light turned on at proximally 500 miles, my gross weight was around 32k+ lbs. ran for about an extra 40 miles afterwards, before stopping for fuel. This is the second time it has happened to me as a local driver and I get an average of 6.5 mpg driving a total of 535 miles in two days. TruckIMG_3926.jpg
     
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  3. Thrasher28

    Thrasher28 Heavy Load Member

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    Aug 12, 2021
    Bowling Green, KY
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    Where the heck are you at that it's 101 degrees already?

    If you play around with the dash, you can probably find somewhere that'll show you your exact range and gallons remaining. Pretty handy feature on newer trucks compared to the older ones with a questionable fuel gauge lol.
     
  4. tscottme

    tscottme Road Train Member

    My best guess is your truck is showing the Add Fuel warning with about 80 gallons used. I'm surprised your truck waits until 10 gallons remaining in the tank to warn you that you are almost out of fuel. Using smaller fuel tanks is a pretty easy way to reduce the weight of the truck which increases MPG, all other things being equal.

    Does your truck have a fuel gallon counter? It is probably buried inside the dashboard or information system menus. Each time you fill up the fuel tanks, reset that fuel gallon counter to zero. The next time When you fill up the fuel tanks how many gallons do you put in? Compare that truck fuel gallon counter of consumed fuel with the number of gallons you are using to fill up the tanks. Make sure you fill up the tanks to the same level each time, whether you shut off the pump when the automatic off happens or whether you fill the tanks to the last drop you can put in.
     
  5. mitrucker

    mitrucker Road Train Member

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    Dec 15, 2010
    Lapeer, MI
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    101? That thing show 105.
     
  6. North Pole Nightmare

    North Pole Nightmare Heavy Load Member

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    Dec 15, 2021
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    2023 t880 with an X15.135 gallon tank,low fuel came on and I stopped for fuel.It took 85 gallons to fill it,so I still had 50 gallons in the tank.
     
  7. Numb

    Numb Crusty Curmudgeon

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    Jan 30, 2012
    Charlotte, N.Carolina
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    I've never run a tank that low on purpose.

    sucks up trash.
     
  8. Ridgeline

    Ridgeline Road Train Member

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    Dec 18, 2011
    Michigan
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    GO GET FUEL at 250 miles, once you run out of fuel, it will be a problem for you to get it started again.
     
  9. Crude Truckin'

    Crude Truckin' Alien Spacecraft

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    Oct 22, 2016
    North Dakota, Eh?
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    Did it run out of fuel?
     
  10. CYPE74

    CYPE74 Bobtail Member

    2
    2
    May 14, 2024
    FL
    0
    Correction the tank holds 100 gallons and it got 85 gallons at TA truck stop. So it think it would've had about 10 more gallons inside the tank before it would shut off on the road. I considered from my experience that when you get the fuel reserve light the truck should not be run more than 50-60 miles tops. Good luck Drivers and be safe.
     
  11. North Pole Nightmare

    North Pole Nightmare Heavy Load Member

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    Dec 15, 2021
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    I had a 2008 t800 brand new with an X15.It had an 85 gallon tank.Dealer was showing me everything on the truck.He said if the fuel light comes on you're only good for about 30 miles.If you ever run it out of fuel they're not easy to get restarted.
     
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