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Oil Coming out of Coolant Hose?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by PE_T, Mar 21, 2019.

  1. Mar 21, 2019 #1
    PE_T

    PE_T Road Train Member

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    One of my dead-end coolant hoses is leaking what appears to be engine oil. The two hoses in the image are coolant hoses connecting my APU to the truck. I currently have the connections closed off because my APU is leaking coolant. Anyway, is it engine oil? If so, then it appears I have engine oil getting into my coolant? It’s only leaking a little.

    This is on a 2014 Freightliner Cascadia DD15.
     

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    Last edited: Mar 21, 2019
    Reason for edit: More info.
    PE_T, Mar 21, 2019
    PE_T, Mar 21, 2019
    #1
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  3. Mar 21, 2019 #2
    mhyn

    mhyn Road Train Member

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    how about your coolant reservoir? is it clean? no oil contamination in reservoir?
     
    mhyn, Mar 21, 2019
    mhyn, Mar 21, 2019
    #2
    PE_T Thanks this.
  4. Mar 21, 2019 #3
    PE_T

    PE_T Road Train Member

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    Texas (trucking since 02/2013)
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    It looks normal, but maybe I haven’t been paying close attention to the color.
     
    PE_T, Mar 21, 2019
    PE_T, Mar 21, 2019
    #3
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