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2009 MaxxForce 7.6l Coolant and Oil Mixing

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by itsbroken, May 29, 2023.

Page 2 of 2
  1. Jun 17, 2023 #11
    AModelCat

    AModelCat Road Train Member

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    Canuckistan
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    Coolant and oil churned together usually gets milky or they stay separated. If its sat a few weeks without running and you dropped the oil the coolant will drain out first.
     
    AModelCat, Jun 17, 2023
    AModelCat, Jun 17, 2023
    #11
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  3. Jun 17, 2023 #12
    itsbroken

    itsbroken Bobtail Member

    7
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    May 29, 2023
    Michigan
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    That is what I thought as well. No coolant came out, and I ran it afterwards and the oil looked normal, no milky color. So, signs are pointing to a bad oil cooler since I am only seeing oil in coolant, not the other way around.
     
    itsbroken, Jun 17, 2023
    itsbroken, Jun 17, 2023
    #12
  4. Dec 16, 2023 #13
    itsbroken

    itsbroken Bobtail Member

    7
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    May 29, 2023
    Michigan
    0
    Conclusion: I had Blackstone analyze the engine oil, they found no coolant. I am almost certain the oil cooler was the problem. Had a reasonable offer as-is, so the truck is sold. Thank you to those that took the time to respond!
     
    itsbroken, Dec 16, 2023
    itsbroken, Dec 16, 2023
    #13
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