Poor fuel mileage

Discussion in 'Ask An Owner Operator' started by Newbieboy, Nov 1, 2020.

  1. Long FLD

    Long FLD Road Train Member

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    If you drive east coast to west coast then last week you had plenty of wind. Also you’re getting winter blend fuel at many places now. But you could also be starving your truck for air. How long has it been since you’ve replaced the air filter? How long has it been since you’ve tested the charge air cooler for leaks?
     
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  3. Tropsnart

    Tropsnart Road Train Member

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    1. Air filter
    2. Check boots on intake piping for tears or loose clamps
    3.have charge air cooler tested for leaks
    4. Turn off engine on long hills
    5.take shortcuts through fields, creeks
     
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  5. cjb logistics

    cjb logistics Heavy Load Member

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    4. Turn off engine on long hills
    5.take shortcuts through fields, creeks

    Some funny #### there,,,,
    #4 but in neutral, Georgia overdrive?
     
  6. Johny41

    Johny41 Road Train Member

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    This time of year gets windy and cooler air has higher density , causing more resistance drag, so more energy/ fuel is needed to push the truck through.
     
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  7. Michael H

    Michael H Medium Load Member

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    My thoughts, exactly. First thing that came to mind was the change in fuel blends to winter.
     
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  8. bryan21384

    bryan21384 Road Train Member

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    Could be a lot of stuff......dpf could be getting clogged, could be bad fuel injectors, how old is the truck?
     
  9. jamespmack

    jamespmack Road Train Member

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    Check air filter and charge air cooler.

    My best month is normally July or August. Lowest is normally Jan, February. I have seen 3 mpg difference with everything functioning properly.
     
  10. User666

    User666 Medium Load Member

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    Kerosene mixed with diesel will hurt your MPG.
     
  11. bad-luck

    bad-luck Road Train Member

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    A lot of things contribute to a decrease in fuel.. mileage. Your speed, wind ect.... Winter fuel blend also plays a role in the decrease. When's the last time you had your truck serviced? Changed your air filter? Also you might need to have the valves adjusted. Is you tirbo boost psi the same as before?
     
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