2012 587 Pete's

Discussion in 'Peterbilt Forum' started by EmeraldCity, Oct 2, 2011.

  1. EmeraldCity

    EmeraldCity Bobtail Member

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    Oct 2, 2011
    Seattle Wa
    Ive Just signed a 3 year lease with the new 2012 587 Pete.
    Im having hard time getting fuel mileage above 7.0 .
    Ive drove 58-62mph all i can get is 6.7-6.9.
    Please Note this truck has been reduced under Primes restrictions.
    Any ideas of how i can improve this situation?
    Thanks
     
  2. BretStep

    BretStep Light Load Member

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    Sep 27, 2011
    Im not sure what you mean by "has been reduced". Are you saying that Prime had the truck governed or remapped to a lower power output?
    6.7 to 6.9 seems retty good for a new motor that still has a lot of internal friction during the break in process.
     
  3. roehl929

    roehl929 Medium Load Member

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    Mar 4, 2011
    Cleveland, TN
    I have to ask what your payment is a week, I already know roughly but I just want to hear it. Ps give your truck time to break In before you expect any real consistent fuel mileage out of it.

    I'm guessing its about 1100$ a week
     
  4. G/MAN

    G/MAN Road Train Member

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    8,507
    Sep 3, 2010
    It takes a while for new engines to break in. Once you get about 150,000 miles on the engine you should see fuel mileage go up. Contrary to what some may think, reducing the speed on trucks will not always improve fuel economy. Sometimes they burn more fuel at lower speeds.
     
    jr-transport Thanks this.
  5. roehl929

    roehl929 Medium Load Member

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    Mar 4, 2011
    Cleveland, TN
    True and it also depends on terrain and weight. If your 44k and going down I 77 the best thing you can do is keep your foot in it. Flat land with less than 30k you can normally keep your rpms in between 12 of 1300 and do pretty well but like g man said every truck is different
     
  6. crzyjarmans

    crzyjarmans Road Train Member

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    Jun 9, 2010
    Home
    Are you a troll?, 6.7-6.9 not bad, if someone telling you they get better, concider the sorce
     
  7. roehl929

    roehl929 Medium Load Member

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    Mar 4, 2011
    Cleveland, TN
    My truck at 58mph gets 7.3 if I'm heavy 7.6 if I'm light. My overall avg is 7.2 for the last 12000 miles. 6.8 is about right for a new truck
     
  8. roehl929

    roehl929 Medium Load Member

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    169
    Mar 4, 2011
    Cleveland, TN
    But my motor isn't cut back at all that makes a huge difference.
     
    KB3MMX Thanks this.
  9. EmeraldCity

    EmeraldCity Bobtail Member

    3
    0
    Oct 2, 2011
    Seattle Wa

    No its less than that, But With fixed costs its over that.
     
  10. roehl929

    roehl929 Medium Load Member

    512
    169
    Mar 4, 2011
    Cleveland, TN
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