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Detroit Diesel Oil Pressure

Discussion in 'Freightliner Forum' started by zlonz3, Sep 19, 2013.

  1. Sep 19, 2013 #1
    zlonz3

    zlonz3 Bobtail Member

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    Feb 15, 2013
    Concord, New Hampshire
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    Just got a 2007 Century with a Detroit Diesel and I'm still feeling her out. Oil pressure goes to 50psi at start up but after about 20 miles settles down to about 27 - 30psi at idle and shoots back up to 45 - 50psi while driving. Does anyone know if this is normal?
     
    zlonz3, Sep 19, 2013
    zlonz3, Sep 19, 2013
    #1
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  3. Sep 19, 2013 #2
    gokiddogo

    gokiddogo Road Train Member

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    That's about the same numbers mine runs at. Mine is a 2000 with 12.7 Detroit. Open road at 62 mph at 1375 rpm or so it shows about 43 range.
     
    gokiddogo, Sep 19, 2013
    gokiddogo, Sep 19, 2013
    #2
    zlonz3 Thanks this.
  4. Sep 19, 2013 #3
    Cottonmouth85

    Cottonmouth85 Bad Influence

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    That's what my S60 did. I never liked the low pressure at idle, always bumped it up 100~200rpm when I parked to keep it around 35psi.
     
    Cottonmouth85, Sep 19, 2013
    Cottonmouth85, Sep 19, 2013
    #3
    zlonz3 Thanks this.
  5. Sep 19, 2013 #4
    jmherring

    jmherring Bobtail Member

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    Sep 18, 2013
    New Mexico
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    That is about right. I have noticed that if you put in some oil stabilizer, it seems to run at about 35psi idle, 50-60psi driving.
     
    jmherring, Sep 19, 2013
    jmherring, Sep 19, 2013
    #4
    zlonz3 Thanks this.
  7. Sep 19, 2013 #5
    Cottonmouth85

    Cottonmouth85 Bad Influence

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    Floresville, Tx
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    Older detroits love Lucas Oil! Actually, come to think of it, everything loves Lucas Oil.
     
    Cottonmouth85, Sep 19, 2013
    Cottonmouth85, Sep 19, 2013
    #5
    zlonz3 Thanks this.
  8. Sep 19, 2013 #6
    freightlinerman

    freightlinerman Road Train Member

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    Normal. My 11.1 which is a 91 model does the same thing.
     
    freightlinerman, Sep 19, 2013
    freightlinerman, Sep 19, 2013
    #6
    zlonz3 Thanks this.
  9. Sep 19, 2013 #7
    jbourque

    jbourque Heavy Load Member

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    Oct 25, 2012
    south english iowa
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    you motors oil pressures are correct
     
    jbourque, Sep 19, 2013
    jbourque, Sep 19, 2013
    #7
    zlonz3 Thanks this.
  10. Sep 20, 2013 #8
    zlonz3

    zlonz3 Bobtail Member

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    Feb 15, 2013
    Concord, New Hampshire
    0
    Just wanted to thank you all for the quick response and input, I was beginning to worry about my truck. And we all know, that's not a good feeling! Much obliged.
     
    zlonz3, Sep 20, 2013
    zlonz3, Sep 20, 2013
    #8
    MazelTruck Thanks this.
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