2012 Freightliner consuming a gallon of oil every 4-5000 miles.

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by milted, Oct 16, 2021.

  1. milted

    milted Bobtail Member

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    Oct 16, 2021
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    Hello, I have 2012 frightliner cascadia dd15 engine with around 280,000 mile on the engine, I have this issue my engine started burning oil every 4,000 to 5,000 mile consuming 1 gallon of oil, I didn’t have any oil leak, the coolant is clean and good, the truck runs great, there is no check engine showing fault code.
     
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  3. MRMTRANS

    MRMTRANS Light Load Member

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    Apr 28, 2015
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    Have an exhaust blowby pressure test done. The more exhaust that gets by between the piston rings and cylinder walls means oil is getting by too. You could also be losing oil through cylinder head valve guides into the cylinders.
     
  4. AModelCat

    AModelCat Road Train Member

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    Did you switch oil brands or viscosity recently?

    I personally have not experienced it but many claim that their engines like certain brands of oil more than others. It does make sense since the additive packages are different in each oil.
     
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  5. BoxCarKidd

    BoxCarKidd Road Train Member

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    One company shop I worked at changed brands. A few trucks out of a 150 or so started using oil like crazy. One was a local low usage and mileage truck. Nothing was done to it, just kept poring oil in it. Even the back of the cab had enough oil for the dirt to stick to it. Stopped just like it started in 10 months or so.
    On the other hand I knew an O/O that swapped oil brands on a regular basis. Always top shelf but different. He always had good service from his engines.
    I cannot explain that just my experience. Maybe a question for Marie Laveau.
    Now before I posted this I just searched lyrics. What happened to " Some things in this world you just can't explain " .
     
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  6. msh

    msh Light Load Member

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    Jul 18, 2021
    Los Angeles, CA
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    carbon packed pistons scratched liners... many EPA10 DD15 engines had this issue... save money for inframe. Install updated kits
     
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