2009 780 mpg

Discussion in 'Volvo Forum' started by LMB, Mar 5, 2013.

  1. LMB

    LMB "Olde Goat"

    1,692
    897
    Aug 12, 2007
    Rocky Point NC
    0
    I've had this truck for about a month. It has a 450 Cummings, 10 speed. Most of the loads we haul are over 40,000. When I first got it I was getting 6.8 to 7.2 mpg. All of a sudden I am down to 6.1 to 6.3. It was serviced when I got it, and I have put approximately 9,000 miles on it. Any thoughts??
     
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  3. PackRatTDI

    PackRatTDI Licensed to Ill

    14,765
    22,568
    Jul 15, 2006
    El Chuco, Tejas
    0
    Did the service include the DPF filter? That seems to be the achille's heel of the ISX engine. How often does it run a regeneration cycle?
     
  4. Hardlyevr

    Hardlyevr Road Train Member

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    Jul 30, 2009
    Mapleton Depot,PA
    0
    Are you running more further north? The thinner blends for cold temps can really kill your mileage vs. southern and warm weather fuel.
     
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