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Thread: 3.9l cummins oil pressure specs

  1. #1
    Member
    Join Date
    Sep 2011
    Location
    south carolina
    Posts
    48

    3.9l cummins oil pressure specs

    Wondering if anyone knows what the oil pressure is suppose to be on a 3.9 cummins. It's in a 1999 kobelco. Brand new engine! Thanks for any help

  2. #2
    Member
    Join Date
    Jan 2013
    Location
    Victoria B.C.
    Posts
    52
    What have you got?

  3. #3
    Senior Member
    Join Date
    Feb 2008
    Location
    wilmington nc
    Posts
    682
    Most of the older 3.9 cummins ran about 42 to 55 psi engine hot. Most of my specs are before 1994, hope this helps.

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