Cummins oil change intereval x15

Discussion in 'Peterbilt Forum' started by Z800xp, Apr 9, 2020.

  1. Z800xp

    Z800xp Bobtail Member

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    Feb 26, 2019
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    Cummins suggests changing the oil at high mileage intervals based on mpg for x15 engines. Seems like a lot of miles on an oil change. What is everyone else doing? A lot of you will probably say do it more often but don't want to if it can be prolonged safely.
     
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  3. Dodsonf855

    Dodsonf855 Bobtail Member

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    Mar 15, 2020
    South arkansas
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    12-15 thousand miles..... it’s worth it
     
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  4. ast26909

    ast26909 Medium Load Member

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    Every 3,000 miles. Seriously, changing engine oil more often doesn't really help it last longer but using the right oil and changing at the right intervals will make a HUGE difference on the wallet and help conservation.
     
  5. AModelCat

    AModelCat Road Train Member

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    Well ask any ISX owner how their cams liked extended oil change intervals. I see no reason to trust what Cummins says for service intervals after that even with the X15 being a different engine.
     
    bzinger and Dave_in_AZ Thank this.
  6. ast26909

    ast26909 Medium Load Member

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    A defect on ONE engine does not dictate the laws of physics.
     
  7. AModelCat

    AModelCat Road Train Member

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    Well if you think going 1,000+ hours on oil is ok, have at it. To me, 500 hours max. Oil and filtration have not advanced a whole lot in the last 10-15 years.
     
    Dave_in_AZ Thanks this.
  8. ast26909

    ast26909 Medium Load Member

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  9. Wespipes

    Wespipes Road Train Member

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    Get you a bypass filtration system. Change filters every 12-15k. Send oil in for testing. Most go around 80-100k miles till it needs to be replaced
     
  10. JonJon78

    JonJon78 Road Train Member

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    80-100k? That's insane.

    You got pictures of the filtration system you put on? I would like to see how it looks since we have the same trucks.
     
    Dave_in_AZ Thanks this.
  11. Dave_in_AZ

    Dave_in_AZ Road Train Member

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    I do my ISX-

    Engine oil
    Oil, fuel, fuel water separator filters
    Chassis lube
    every 20,000

    $300 give or take.

    Coolant filter and air yearly.

    New camshaft installed = $5000 or 17 oil changes

    I'm at 700K miles
     
    JonJon78 and bzinger Thank this.
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