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pneumatic tank drivers.,.. what kind of mpg do you get?

Discussion in 'Tanker, Bulk and Dump Trucking Forum' started by rbrtwbstr, Aug 21, 2013.

  1. Aug 21, 2013 #1
    rbrtwbstr

    rbrtwbstr Road Train Member

    3,210
    7,112
    Jul 11, 2012
    in the bush somewhere
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    Title says it.....I just got a new western star glider and can't seem to get above 4.8 mpg. (Last truck with nearly same specs was getting 5.6). So I wonder what y'all are getting. I haul 3 loads per night, usually in the hills of central pa.
     
    rbrtwbstr, Aug 21, 2013
    rbrtwbstr, Aug 21, 2013
    #1
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  3. Aug 21, 2013 #2
    Powder Joints

    Powder Joints Subjective Prognosticator

    7,162
    6,734
    Sep 25, 2007
    Rosamond, SoCal
    0
    7.25 to 7.90, 475 hp Detroit 13 liter, 2013 Freightllner Coronado, 10 speed. 2 axle sleeper. 2011 Buell Doubles.
    I generally shift at 1500 or there about.
     
    Powder Joints, Aug 21, 2013
    Powder Joints, Aug 21, 2013
    #2
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  4. Aug 21, 2013 #3
    MH60L

    MH60L Light Load Member

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    Jul 1, 2013
    0

    There is a mechanical reason for your mileage. Check the usual suspects like CAC and pressure connections. Also, if the engine was a factory reman it will have the latest EPA settings and might need a reprogram to unlock fuel mileage. I had a 2007 Western Star with an ACERT Cat and got 6.2 pulling 1600 CF pneumatics.
     
    Last edited: Aug 21, 2013
    MH60L, Aug 21, 2013
    MH60L, Aug 21, 2013
    #3
    rbrtwbstr Thanks this.
  5. Aug 21, 2013 #4
    Blind Driver

    Blind Driver Road Train Member

    3,080
    1,405
    Aug 7, 2006
    New Albany, IN
    0
    I was getting 7.2 on the highway with a KW daycab that had a Cummins under the hood. If I ran nothing but city for the day, I was down to 5 mpg. There were no hills, just stop lights.
     
    Blind Driver, Aug 21, 2013
    Blind Driver, Aug 21, 2013
    #4
    rbrtwbstr Thanks this.
  7. Aug 21, 2013 #5
    rbrtwbstr

    rbrtwbstr Road Train Member

    3,210
    7,112
    Jul 11, 2012
    in the bush somewhere
    0
    Thanks for the replies. This truck has a 3406e set at 550 HP, 13 SPD, 3.42 rears. Which I know is geared pretty tall for the application. My thought was because everything was freshly rebuilt it just needs more time to get broken in? It has 20000 miles as of now. When it was dyno'ed at the dealer the report showed 515 HP to the ground if that matters.
     
    rbrtwbstr, Aug 21, 2013
    rbrtwbstr, Aug 21, 2013
    #5
  8. Aug 21, 2013 #6
    Blind Driver

    Blind Driver Road Train Member

    3,080
    1,405
    Aug 7, 2006
    New Albany, IN
    0
    Running the hills a little slower will probably give you better fuel mileage. No reason to be in a race unless you are trying to get loaded before the plant closes. Been there, done that ;)

    A boost gauge will help you get better fuel mileage. Engines like to not go over a certain amount of boost for best fuel economy.
     
    Blind Driver, Aug 21, 2013
    Blind Driver, Aug 21, 2013
    #6
  9. Aug 21, 2013 #7
    rbrtwbstr

    rbrtwbstr Road Train Member

    3,210
    7,112
    Jul 11, 2012
    in the bush somewhere
    0
    Tried slowing down. Helped a little. Been driving like there's a rotten egg under the throttle. I really don't have a reason to be in a hurry, everywhere I go is open 24 he's.
     
    rbrtwbstr, Aug 21, 2013
    rbrtwbstr, Aug 21, 2013
    #7
  10. Aug 21, 2013 #8
    rbrtwbstr

    rbrtwbstr Road Train Member

    3,210
    7,112
    Jul 11, 2012
    in the bush somewhere
    0
    I have a pyrometer and boost gauge. I try and keep the boost at 20 lbs or less and under 875 on the pyro
     
    rbrtwbstr, Aug 21, 2013
    rbrtwbstr, Aug 21, 2013
    #8
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