Cummins ISX 485ST low oil pressure

Discussion in 'Kenworth Forum' started by Nefi, Jan 16, 2016.

  1. field003

    field003 Bobtail Member

    Oct 24, 2020
    I am having the same issue on my 2015 Pete 579. All the same symptoms except a heavy knocking. Sounds like the flywheel or something internal has came loose. Has anyone experienced this?
  2. Jumpallin#69

    Jumpallin#69 Bobtail Member

    Dec 23, 2020
    I have same issue and I change oil filter and good again for about a week then oil drops down below 20 and check engine light goes on again. When I change filter starts up at 40-45 but once going drops to 25-30 @ 70 mph. At stop it drops at 20. Don't know if it's oil, oil filter, or what. I have 14 Cummins isx. Any help
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