Truckers Report Jobs

Find Trucking Jobs

Company Driver Company Driver Dry Van Dry Van Flatbed Flatbed Refrigerated Refrigerated Specialized Specialized Owner Operator Owner Operator
More Trucking Job Searches ⌄ Fewer Trucking Job Searches
⌃

need input on isx550-18 eaton ultra shift

Discussion in 'Ask An Owner Operator' started by guntowntrucker, Apr 3, 2015.

Page 1 of 2
  1. Apr 3, 2015 #1
    guntowntrucker

    guntowntrucker Bobtail Member

    19
    14
    Apr 1, 2015
    0
    o.k. yall, i'm new on this forum and it looks like a great place to talk with other truckers and get good info.

    i just bought a 2015 w-900 with a 550 cummins /18 spd eaton ultra shift (first auto i've ever had, but i like it so far)/and 3:55 rears. on 24.5 rubber

    my question is: does anyone else have this configuration, and what kind of fuel mileage are you getting? seems like mine kinda' sucks.....thoughts
     
    guntowntrucker, Apr 3, 2015
    guntowntrucker, Apr 3, 2015
    #1
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. Apr 3, 2015 #2
    icsheeple

    icsheeple Trailing the Herd

    2,548
    2,552
    Nov 1, 2013
    Kansas City, KS
    0
    What's your cruise speed?
     
    icsheeple, Apr 3, 2015
    icsheeple, Apr 3, 2015
    #2
  4. Apr 3, 2015 #3
    fireba11

    fireba11 Heavy Load Member

    864
    541
    Jul 30, 2007
    Tracy City, TN
    0
    I wil; be interested in the responses as we are about to take delivery of a 2016 T-800 with the 550 isx and ultrashift plus. We geared it at 3:42 so I am hoping it will be a good gearing for the truck
     
    fireba11, Apr 3, 2015
    fireba11, Apr 3, 2015
    #3
  5. Apr 3, 2015 #4
    guntowntrucker

    guntowntrucker Bobtail Member

    19
    14
    Apr 1, 2015
    0
    i usually drive 65-70 mph.
     
    guntowntrucker, Apr 3, 2015
    guntowntrucker, Apr 3, 2015
    #4
  7. Apr 4, 2015 #5
    OONewbie

    OONewbie Light Load Member

    245
    134
    Dec 2, 2014
    Charlotte,NC
    0
    I was recommended to use these guys for performance tuning and fuel savings(tweaking the ecm for best economy) they do it for much less then the big guys and have been recommended here on TTR too...

    http://www.effinghamdieselperformance.com/

    217-994-1831
     
    OONewbie, Apr 4, 2015
    OONewbie, Apr 4, 2015
    #5
  8. Apr 4, 2015 #6
    Lone Ranger 13

    Lone Ranger 13 Road Train Member

    1,542
    1,298
    Sep 27, 2012
    Asheville, NC
    0
    You need to slow down to about 60-62 if you wanna get decent fuel economy.

    I have a Peterbilt 379 that will run more than 90 mph., The last time I used it I was running coast to coast. I ran about 60 mph gross weight about 77k. I got above 6.5 mpg. If you want good fuel economy, slow down . Otherwise, pay the man. Fuel mileage is mostly you.
     
    Lone Ranger 13, Apr 4, 2015
    Lone Ranger 13, Apr 4, 2015
    #6
  9. Apr 4, 2015 #7
    king Q

    king Q Road Train Member

    2,880
    3,032
    Jul 26, 2010
    Johannesburg sa
    0
    A W900 is a brick and designed with aerodynamics not a priority.
    Anything over 50mph and you are burning so much fuel pushing air no matter how efficient the drive train is you will be fighting an uphill battle.
    Get a slippery truck if you want fuel economy.

    Post what you are getting and you will get comments on how you are doing all things considered.
     
    king Q, Apr 4, 2015
    king Q, Apr 4, 2015
    #7
  10. Apr 6, 2015 #8
    icsheeple

    icsheeple Trailing the Herd

    2,548
    2,552
    Nov 1, 2013
    Kansas City, KS
    0
    My trucks a pig on fuel. Wind is everything with a hood. I have gotten 7mpg, but when I'm fighting wind, I barely get 6mpg. I'm at 6.5 mpg on all miles usually rolling 58mph. Ouchie. I shoulda bought that Volvo 770 I had my eye on. Or a cheap FL Columbia or Century.
     
    icsheeple, Apr 6, 2015
    icsheeple, Apr 6, 2015
    #8
  11. Apr 6, 2015 #9
    guntowntrucker

    guntowntrucker Bobtail Member

    19
    14
    Apr 1, 2015
    0
    thanks for the input guys, i will have to do some serious record keeping to figure out where the sweet spot is.

    do ya'll think that there is any difference (regarding mpg) with an auto shift?
     
    guntowntrucker, Apr 6, 2015
    guntowntrucker, Apr 6, 2015
    #9
  12. Apr 7, 2015 #10
    king Q

    king Q Road Train Member

    2,880
    3,032
    Jul 26, 2010
    Johannesburg sa
    0
    In general an auto-shift gets better MPG but if it is set up badly it can get worse than a competent driver.
     
    king Q, Apr 7, 2015
    king Q, Apr 7, 2015
    #10
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

    • Page 1 of 2