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C15 Acert oil in water

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Diesel Dan 92, Aug 5, 2017.

Page 1 of 4
  1. Aug 5, 2017 #1
    Diesel Dan 92

    Diesel Dan 92 Light Load Member

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    Nov 27, 2015
    0
    When to check coolant this morning and have oil in my rad tank.

    Truck runs like a top, pulling 150k+ does not get hot.

    Any ideas where it's coming from?
     
    Diesel Dan 92, Aug 5, 2017
    Diesel Dan 92, Aug 5, 2017
    #1
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  3. Aug 5, 2017 #2
    DL550CAT

    DL550CAT Road Train Member

    1,427
    1,482
    Oct 18, 2009
    Waynesburg, Pa
    0
    It has to be somewhere that has more oil pressure than coolant pressure. the cheapest is probably the oil cooler. Good luck.
     
    DL550CAT, Aug 5, 2017
    DL550CAT, Aug 5, 2017
    #2
    Oxbow Thanks this.
  4. Aug 5, 2017 #3
    tnevin225

    tnevin225 Road Train Member

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    Jan 1, 2014
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    How many miles on motor? Cracked head or bad oil cooler, head gasket. Like DL550 said it is someplace where the oil pressure is greater than the coolant pressure.
     
    tnevin225, Aug 5, 2017
    tnevin225, Aug 5, 2017
    #3
    Oxbow Thanks this.
  5. Aug 5, 2017 #4
    TruckerPete1990

    TruckerPete1990 Road Train Member

    8,623
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    Jul 16, 2012
    Bentonville Arkansas
    0
    Prob oil cooler.
     
    TruckerPete1990, Aug 5, 2017
    TruckerPete1990, Aug 5, 2017
    #4
    Oxbow Thanks this.
  7. Aug 5, 2017 #5
    swaan

    swaan Road Train Member

    2,942
    4,374
    Jul 12, 2009
    BC canada
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    Confirm it's oil and not fuel..
    If it's oil then it's usually always an oil cooler on a cat.

    Fuel then it's injector cups
     
    swaan, Aug 5, 2017
    swaan, Aug 5, 2017
    #5
    Oxbow and cnsper Thank this.
  8. Aug 5, 2017 #6
    Diesel Dan 92

    Diesel Dan 92 Light Load Member

    137
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    Nov 27, 2015
    0
    It's black so for sure crankcase oil.

    motor has about 260,000 on it.

    Best place to purchase a new oil cooler? CAT? Aftermarket?
     
    Diesel Dan 92, Aug 5, 2017
    Diesel Dan 92, Aug 5, 2017
    #6
    Oxbow Thanks this.
  9. Aug 5, 2017 #7
    swaan

    swaan Road Train Member

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    Jul 12, 2009
    BC canada
    0
    Kenworth or peterbuilt
     
    swaan, Aug 5, 2017
    swaan, Aug 5, 2017
    #7
    Oxbow Thanks this.
  10. Aug 5, 2017 #8
    tnevin225

    tnevin225 Road Train Member

    1,166
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    Jan 1, 2014
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    Or
    Or Freightliner.
     
    tnevin225, Aug 5, 2017
    tnevin225, Aug 5, 2017
    #8
  11. Aug 5, 2017 #9
    jeastonjr

    jeastonjr Light Load Member

    99
    120
    Nov 4, 2013
    Weymouth,Ma.
    0

    Try and email this mechanic. He has a lot of cat repair videos.
     
    jeastonjr, Aug 5, 2017
    jeastonjr, Aug 5, 2017
    #9
  12. Aug 5, 2017 #10
    Diesel Dan 92

    Diesel Dan 92 Light Load Member

    137
    50
    Nov 27, 2015
    0
    well shoot guys, I just checked it again and it almost smells diesel-ish but it's black..
     
    Diesel Dan 92, Aug 5, 2017
    Diesel Dan 92, Aug 5, 2017
    #10
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