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Brand New ISX15 Questions?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by 01blackz28, Feb 16, 2013.

  1. Feb 16, 2013 #1
    01blackz28

    01blackz28 Light Load Member

    150
    19
    Oct 29, 2011
    0
    Have a 2013 Peterbilt with an ISX Cummins 550hp 1850ft/tq. The motor only has 11,000 miles on it and has burned over 4 gallons of oil. Is this expected during engine break-in? We had an inframe done on a 6nz and it only burned maybe a gallon during break-in period. My other question is what is the ideal rpm to shift the truck at (3.90 gears 18-speed)? Avg loads are 110,000lbs and only averaging 4.0mpg (600 miles round trip).
     
    01blackz28, Feb 16, 2013
    01blackz28, Feb 16, 2013
    #1
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  3. Feb 16, 2013 #2
    jrboyce83

    jrboyce83 Bobtail Member

    40
    9
    Nov 14, 2012
    0
    that sounds like a leak, not a break in situation.
     
    jrboyce83, Feb 16, 2013
    jrboyce83, Feb 16, 2013
    #2
  4. Feb 16, 2013 #3
    01blackz28

    01blackz28 Light Load Member

    150
    19
    Oct 29, 2011
    0
    There is no leaks on the truck. It has a total of 11,000 miles 3,500 which were put on this week. The truck probably gets washed 3 times a week and the engine is show-room looking so no visible leak. I'm worried about the rings not seating correctly. Had this happen with a Interstate McBee kit in a 3406e
     
    01blackz28, Feb 16, 2013
    01blackz28, Feb 16, 2013
    #3
  5. Feb 17, 2013 #4
    manasteel

    manasteel Light Load Member

    124
    32
    Sep 10, 2012
    0
    the new engine has an issue with the exhaust valve guide seals coming off the guide. it should be throwing a code for to frequent of regen 3375 and 3376. remove the v/c and look a the valves closest to the exhaust manifold to see if the seal has come off. the repair takes about 5hr and is of course coverd under warranty.
     
    manasteel, Feb 17, 2013
    manasteel, Feb 17, 2013
    #4
    123456 and Hardlyevr Thank this.
  7. Feb 17, 2013 #5
    01blackz28

    01blackz28 Light Load Member

    150
    19
    Oct 29, 2011
    0
    There has been no check engine lights or codes. I'm gonna call the peterbilt dealer monday, I'm not going to touch the truck after I have it serviced. If it continues to burn oil it will be going back to peterbilt. Do you know of any other links that I can read about this issue? Thank you
     
    01blackz28, Feb 17, 2013
    01blackz28, Feb 17, 2013
    #5
  8. Mar 24, 2013 #6
    JakeB

    JakeB Bobtail Member

    2
    0
    Mar 24, 2013
    0
    Valve seals aren't the root cause of 3375 and 3376.
     
    JakeB, Mar 24, 2013
    JakeB, Mar 24, 2013
    #6
  9. Mar 25, 2013 #7
    59BROCKWAY

    59BROCKWAY Light Load Member

    168
    68
    Jun 22, 2012
    Northeast
    0
    The 2013 cascadia I drive had 985 miles on it when I got it and was 1 gallon down. Now how bad does yours really sound? It never used that much oil after i started to drive it. It only has 48,000 some odd miles on her now and has only used about 1 gallon since. I only haul 80,000 and shes a dd13 3:42 RR You pull a much heavier load and depending how its pushed I can see it eating 1 or 2 gallons during break in . As long as a ring isn't cracked . I would monitor it though.
     
    59BROCKWAY, Mar 25, 2013
    59BROCKWAY, Mar 25, 2013
    #7
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