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Dd15 oil leaking From breather

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Oscarv, Jul 21, 2022.

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  1. Jul 21, 2022 #1
    Oscarv

    Oscarv Bobtail Member

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    Jul 20, 2022
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    So I’ve had this truck for 3 years now bought it used 450k now has 818k yesterday I was climbing a steep grade and noticed what looked like smoke in a distance out my mirrors and shortly after smelled it... pulled over and checked to make sure it wasn’t me... well it was me I had tons of blow by smoke out of the breather filter it never smoked... shut the truck off coolant instantly leaked out overflow tank .. topped it off again and checked oil level looked good 55-60 psi while climbing cabbage hill. Uncoupled attempted to drive it back to the yard not even 45 sec later low coolant stop light added coolant again 1 min later did the same thing checked oil and oil is getting in coolant now starts turning milky... any ideas oil cooler possibly?I’ve never changed the filter to the breather system ... this truck has never gave me a issue in roughly 400k miles aside from fuel pump and dpf cleaning any help is greatly appreciated.
     

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    Oscarv, Jul 21, 2022
    Oscarv, Jul 21, 2022
    #1
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  3. Jul 21, 2022 #2
    Big Road Skateboard

    Big Road Skateboard Road Train Member

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    May 2, 2021
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    Probably blown head gasket or warped head. Did it overheat? I've seen several warped heads on a DD15. Warped so bad you could see it after pulling head bolts.

    Sounds like your getting compression into your cooling system
     
    Big Road Skateboard, Jul 21, 2022
    Big Road Skateboard, Jul 21, 2022
    #2
    Dirk Diggler and LoneRanger Thank this.
  4. Jul 21, 2022 #3
    baha

    baha Road Train Member

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    Call for a tow to a shop that someone can recommend if you can tell them where you are, bad things like needing a new crankshaft will happen if you try to drive with milk looking oil from a bad part?
     
    baha, Jul 21, 2022
    baha, Jul 21, 2022
    #3
  5. Jul 21, 2022 #4
    armo

    armo Light Load Member

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    Jun 16, 2022
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    liner's seal/o-rings ... the bottom ones... overhaul !
     
    armo, Jul 21, 2022
    armo, Jul 21, 2022
    #4
  7. Jul 21, 2022 #5
    Big Road Skateboard

    Big Road Skateboard Road Train Member

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    Water in oil, yes, but wouldn't cause it to push out water
     
    Big Road Skateboard, Jul 21, 2022
    Big Road Skateboard, Jul 21, 2022
    #5
    Dirk Diggler and LoneRanger Thank this.
  8. Jul 21, 2022 #6
    armo

    armo Light Load Member

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    Jun 16, 2022
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    this engine is done. Inframe. could be head gasket too or head
     
    armo, Jul 21, 2022
    armo, Jul 21, 2022
    #6
  9. Jul 21, 2022 #7
    Rideandrepair

    Rideandrepair Road Train Member

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    Pushing coolant, probably blew the already weak oil cooler. Need to find out if it’s building pressure in the coolant, before anything,
     
    Rideandrepair, Jul 21, 2022
    Rideandrepair, Jul 21, 2022
    #7
  10. Jul 21, 2022 #8
    Chieftains

    Chieftains Medium Load Member

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    894
    Jul 18, 2021
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    If it's leaking oil heavily from breather. Than it's the crankcase canister filter. About 300 bucks.
    Have to change the whole thing. It's a one time filter.

    Double check where it's leaking from before a big bill comes
     
    Chieftains, Jul 21, 2022
    Chieftains, Jul 21, 2022
    #8
  11. Jul 21, 2022 #9
    Dirk Diggler

    Dirk Diggler Light Load Member

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    Jul 15, 2022
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    It’s a blown head gasket/ warped or cracked head.
     
    Dirk Diggler, Jul 21, 2022
    Dirk Diggler, Jul 21, 2022
    #9
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