ISX 5.3 mpg is it normal??

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Duliz, Jun 20, 2008.

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  1. beltrans

    beltrans Medium Load Member

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    Why? I do not know. Trailers with 36" king pin to front are available here but that setting is not very common.
     
    beltrans, Jul 9, 2011
    #31
  2. Tightwad

    Tightwad Light Load Member

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    Ive never seen an 18" Setting. The following is all Ive ever seen.

    Shallow 30" (Common on pups to allow more clearance with forward set landing gear to stop pups from noising over)

    Standard 36"

    Deep 42" (Becoming more popular as it allows closing the gap without overloading a setback steer).
     
    Tightwad, Jul 10, 2011
    #32
  3. jyrlj89

    jyrlj89 Bobtail Member

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    hi i have a volvo with a cummins isx 500hp. after i did the egr delete myself im getting 7.5 with 79k lbs and over 8 mpg with light loads. before delete i was getting what you are. trust me its hundreds of dollars i save on fuel now.
     
    jyrlj89, Jul 24, 2013
    #33
  4. klavi6a

    klavi6a Bobtail Member

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    How is that possible?! :)
    I got my EGR fixed with a little help of a steel plate. Still getting between 6,3 - 6,5. I always haul light loads 5k - 20k. Cummins ISX CM870 on International. Don't know the numbers for my diffs but it has 10 sp. Eaton autoshift.
    Friend of mine has cummins ISX on Volvo (with automatic as well) and he said he gets 7++.
    Am I missing something???
     
    klavi6a, Oct 4, 2014
    #34
  5. Sebas

    Sebas Bobtail Member

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    Sebas, May 9, 2016
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  6. Loco transfer

    Loco transfer Bobtail Member

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    Check cac is leaking. That can kill MPG.
     
    Loco transfer, May 9, 2016
    #36
  7. khalidjamal123

    khalidjamal123 Bobtail Member

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    I have a Volvo w/ISX Cummins CM870 with a 13 speed. No matter what I do, If I am loaded or bobtail, I get 5 to 5.5 mpg. Any help would be great.
     
    khalidjamal123, May 16, 2016
    #37
  8. DUNE-T

    DUNE-T Road Train Member

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    Gotta take it to a good mechanic, he can diagnose better seeing it
     
    DUNE-T, May 16, 2016
    #38
  9. James Riddick

    James Riddick Bobtail Member

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    I just picked up a 2012 Peterbilt w/ isx. Previous driver turner it in for the 5.2 mpg he was getting. I immediately installed an "Aircell" unit (Aircellfleet.com) and immediately increased my mpg to over 6.2. After a few full loads 30,000 -40,000 lbs running Ohio to California to Phoenix to Dallas and on to Pensacola my ISX reaches 6.9 h 7.2 mpg. Aircell cost me $152.00 and 15 min install. Good luck to ya, from one OTR trucker to another - James
     
    James Riddick, Nov 18, 2016
    #40
  10. little cat 500

    little cat 500 Road Train Member

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    now thats funny
     
    little cat 500, Nov 18, 2016
    #40
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