Cummins ISC Normal Oil Consumption ?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by SilverBulletBand, Jul 7, 2020.

  1. SilverBulletBand

    SilverBulletBand Light Load Member

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    I drive a 2015 Freightliner M102 with 157,xxx miles. I believe it has a Cummins ISC in it. Maybe ISL ? Not sure...

    Anyways, It's using about a Gallon of oil per month. I out on about 2-3,000 miles/month.

    Is this normal oil consumption rate for the miles ? When does oil consumption become a concern ?
     
    singlescrewshaker Thanks this.
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  3. singlescrewshaker

    singlescrewshaker Road Train Member

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    How much oil are you adding at a time.?

    I ask only because I made a silly mistake when I 1st got my tractor. About the half full mark on the stick, I'd add half a gallon to bring her up to full. Doing this she'd drink 2.5-3 gallon between PM's. Little did I know, it was just settling to her happy spot..

    As soon as someone said stop doing that, add a whole gallon at the low mark. That was the end of that. It now settles about 2-2.5 quarts low on the stick in the 1st 1500miles or so, & stays there the next 8500-9500miles till its PM time.

    Just a thought..
     
  4. Lazer

    Lazer Road Train Member

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    If it’s only a gal per month, I would not be overly concerned.
    If there are no visible leaks, keep rolling.
    Just for giggles, at your next oil change, try a different brand. You may be suprised.
     
  5. pushbroom

    pushbroom Road Train Member

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    Oil consumption becomes a concern when rebuilding the engine seems easier then topping it up all the time.
     
  6. baha

    baha Road Train Member

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    1st is it dripping on ground or burning it?
     
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