Peterbilt Cat C15 oil pressure problem

Discussion in 'Peterbilt Forum' started by trs100, Feb 14, 2012.

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  1. O5KW

    O5KW Bobtail Member

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    My oil pressure just dropped to 20psi at an idol tonight and gained quit a bit more blow by. Any ideas? It's an 05 acert
     
    O5KW, Feb 11, 2016
    #21
  2. Superhauler

    Superhauler TEACHER OF MEN

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    Is it running rough? What serial# prefix is the engine.
     
    Superhauler, Feb 11, 2016
    #22
  3. peterbilt_2005

    peterbilt_2005 Medium Rare

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    How many,miles since last oil change?

    What filters you have ?
     
    peterbilt_2005, Feb 11, 2016
    #23
  4. Luis benitez

    Luis benitez Bobtail Member

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    I’m having the similar issue but my accert is around10-20 psi at 600rpm and 55 psi at 1500 rpm any suggestions?
     
    Luis benitez, Mar 22, 2018
    #25
  5. peterbilt_2005

    peterbilt_2005 Medium Rare

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    how many miles on motor?

    have you had any oil samples done?

    when was last oil change?

    does the truck have a blowby tube?

    if blowby on truck. what's coming out?
    smoke? what color?
    oil?


     
    peterbilt_2005, Mar 22, 2018
    #25
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  6. Luis benitez

    Luis benitez Bobtail Member

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    I have not had any samples done.


    Last oil change was about 4K ago


    It has a little bit of blowby and white smoke is coming out.
     
    Luis benitez, Mar 22, 2018
    #26
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  7. peterbilt_2005

    peterbilt_2005 Medium Rare

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    how many miles. what year
     
    peterbilt_2005, Mar 22, 2018
    #27
  8. Luis benitez

    Luis benitez Bobtail Member

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    It has 260k and it’s a 2006
     
    Luis benitez, Mar 23, 2018
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  9. peterbilt_2005

    peterbilt_2005 Medium Rare

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    that is incredibly low miles for that motor to be that low in pressure.
     
    peterbilt_2005, Mar 23, 2018
    #29
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  10. Codynidaho

    Codynidaho Light Load Member

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    What oil are you running? I've noticed a difference in pressure from rotella and delo. I'm running delo on a fresh overhauled engine and it runs at about 63pounds at 1500rpm. It was higher when I had rotella in it before.
     
    Codynidaho, Mar 23, 2018
    #30
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