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advice for a 2015 lone star

Discussion in 'International Forum' started by trukngrl, Oct 17, 2014.

Page 1 of 3
  1. Oct 17, 2014 #1
    trukngrl

    trukngrl Lollipop, lollipop...

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    Mar 7, 2009
    Manchester, Ga
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    Ok so I took the plunge and decided to get my own truck. It's a 2015 Lone star with an ISX Cummins. 485 HP 3.25 gear ratio and 35,000 miles. What I would like to know is how can I improve fuel mileage. She was at 6.6 but the past couple days has dropped to 5.9-6.0. I usually travel I40 to Cali and back east and haul around 38,000lbs. Any advice?
     
    Last edited: Oct 17, 2014
    trukngrl, Oct 17, 2014
    trukngrl, Oct 17, 2014
    #1
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  3. Oct 17, 2014 #2
    crxdc

    crxdc Road Train Member

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    1,201
    Jun 24, 2013
    Las vegas NV
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    Like all trucks keep your right foot light. Also usually takes about 100k to get them broken in.
     
    crxdc, Oct 17, 2014
    crxdc, Oct 17, 2014
    #2
    trukngrl Thanks this.
  4. Oct 17, 2014 #3
    Truckin Juggalo

    Truckin Juggalo Medium Load Member

    606
    125
    Aug 5, 2006
    Madisonville, TN
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    1. buy a ScanGauge KR $228 https://letstruck.com/store/scangaugekr with no modifications i was able to bring up my mpg from 6.2 avg to 6.8 just by driving according to the Mpg and Average Per Tank Readout
    2. Run Synthetic 5w40 oil slight mpg improvement i use Rotella T6 $21 a gallon at walmart
    3. Slow down i run between 55 and 58 mph and be light on the gas when climbing hills
    4. Never Idle, i use a Champion 3100 watt Generator its as quiet as a TriPac, and i have a 12000 btu LG portable A/C unit on the top bunk and electric blanket and a Electric Heater
    5. http://flowbelow.com/AeroKit.html $1,800
    6. Air Tabs http://www.airtab.com/ $200
    7. FASS
     
    Truckin Juggalo, Oct 17, 2014
    Truckin Juggalo, Oct 17, 2014
    #3
    trukngrl Thanks this.
  5. Oct 17, 2014 #4
    russtrucker

    russtrucker Road Train Member

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    337
    Mar 27, 2012
    Central PA
    0
    My friend drives a 2015 prostar with isx450 cummins, 2.64 rear axles, super singles, and 10 sp ultrashift. According to his peoplenet, he gets 9 mpg at 70 mph and loaded at 19k lbs. No need of driving slowing and he can get to destination in time.
     
    russtrucker, Oct 17, 2014
    russtrucker, Oct 17, 2014
    #4
    trukngrl Thanks this.
  7. Oct 18, 2014 #5
    Helowrenchturn2

    Helowrenchturn2 Medium Load Member

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    Apr 23, 2013
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    If you've had a significant drop in mpg like that then I would be looking at mechanicals. If you can swing it, get it in a shop and have the computer looked at. Then start looking for any type of boost leaks, charge air cooler, emissions issues. Being close to a full mpg drop I would definitely be suspect of something. Make sure everything is solid before trying to add or take away equipment for mpg
     
    Helowrenchturn2, Oct 18, 2014
    Helowrenchturn2, Oct 18, 2014
    #5
    trukngrl Thanks this.
  8. Oct 18, 2014 #6
    DrtyDiesel

    DrtyDiesel Road Train Member

    5,348
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    Feb 14, 2010
    Jacksonville, FL
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    Just be glad you have an isx in that truck and not a maxxforce. Though being light on the throttle may help a lot.
     
    DrtyDiesel, Oct 18, 2014
    DrtyDiesel, Oct 18, 2014
    #6
    trukngrl Thanks this.
  9. Oct 18, 2014 #7
    trukngrl

    trukngrl Lollipop, lollipop...

    676
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    Mar 7, 2009
    Manchester, Ga
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    Thank you all for the advice. I think I'm gonna have it hooked up to a computer to make sure there aren't any issues. I noticed my boost has decreased also. Again thanks for all the advice
     
    trukngrl, Oct 18, 2014
    trukngrl, Oct 18, 2014
    #7
  10. Oct 18, 2014 #8
    Truckin Juggalo

    Truckin Juggalo Medium Load Member

    606
    125
    Aug 5, 2006
    Madisonville, TN
    0
    oh i also recommend using Fuel Gauges its free and makes it easy to track you MPG and also makes it easier to discover when something is Mechanically wrong with the truck a unexplained drop for no reason could be Regen related or a leak in the charge air cooler or Something as simple as a head wind
     
    Truckin Juggalo, Oct 18, 2014
    Truckin Juggalo, Oct 18, 2014
    #8
  11. Oct 18, 2014 #9
    trukngrl

    trukngrl Lollipop, lollipop...

    676
    496
    Mar 7, 2009
    Manchester, Ga
    0
    When she dropped we was heading to Kentucky and she hasn't been right since. Finally got her back to 6.2 yesterday. I really detest all this egr bull :biggrin_25510: makes things more complicated than they have to be... And more expensive :biggrin_2556:
     
    trukngrl, Oct 18, 2014
    trukngrl, Oct 18, 2014
    #9
  12. Oct 18, 2014 #10
    38short

    38short Light Load Member

    63
    12
    Sep 10, 2007
    Katy Tx
    0
    Truckin Juggalo what is the model number for the champion generator that you use in the truck.
     
    38short, Oct 18, 2014
    38short, Oct 18, 2014
    #10
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