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milkshake oil after startup

Discussion in '6.9L IH & 7.3L IDI Diesels' started by Josh Oldenburg, Nov 16, 2019.

  1. Josh Oldenburg

    Josh Oldenburg Full Access Member

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    ok so prior to installing my 7.3 in my superduty I rebuilt the oil cooler. I also did a compression check and all cylinders were right around 400. After about 10 minutes of running the engine in chassis the oil has taken on a grayish color almost white. i have seen worse than this before in gassers. There is no missfire and it cranks right up however im concerned about head gaskets or a cracked head/block. There is some oil residue in the surge tank so I am praying I botched the cooler rebuild. Does anyone know if a hydrocarbon test will work on a diesel engine?
     
  2. Josh Oldenburg

    Josh Oldenburg Full Access Member

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    my buddy came over and said that im jumping the gun and that if it were a coolant leak that it would be way worse
     
  3. lotzagoodstuff

    lotzagoodstuff Supporting Member Supporting Member

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    Just wondering: did you pressure test the oil cooler when you had it off? They can be prone to corroding/pinholing.

    Lastly: you said "7.3 in your SuperDuty": is this an IDI or a Powerstroke?
     
  4. Josh Oldenburg

    Josh Oldenburg Full Access Member

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    IDI. And no o did not pressure test it. Didn't know it was possible to

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  5. 79jasper

    79jasper Chickenhawk

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    Personally I would do a cheap oil change (tractor supply has 5 gal buckets of 15-40 for just under $50)
    Then see if it comes back. You could also pressure check the cooling system. (Drain oil. Leave drain plug out, then check)

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  6. Josh Oldenburg

    Josh Oldenburg Full Access Member

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    Good idea 79Jasper. I will try that

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  7. Josh Oldenburg

    Josh Oldenburg Full Access Member

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    This is what I got[​IMG][​IMG][​IMG][​IMG]

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  8. IDIBRONCO

    IDIBRONCO IDIBRONCO

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    I'd lean toward the oil cooler myself.
     
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  9. 1992 idi 73

    1992 idi 73 Registered User

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    You put and IDI in a SuperDuty,:thumbsup: that is one of the coolest things you could ever do! What year is the truck and picture of the build would be much appreciated.
     
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  10. Josh Oldenburg

    Josh Oldenburg Full Access Member

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    1988 IDI in a 2000 f250, 6.0 radiator, psd 4r100, quick shift controller and soon a dt466 or stock vgt 6.0 turbo

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    Last edited: Nov 17, 2019
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  11. YJMike92

    YJMike92 Full Access Member

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    I would check the oil cooler and see if you pinched an o-ring or a problem with cooler itself. I would definitely stop running the engine until you have the problem figured out. coolant in the oil is pretty rough on bearings.
     
  12. Josh Oldenburg

    Josh Oldenburg Full Access Member

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    Here are some[​IMG][​IMG][​IMG][​IMG][​IMG]

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  13. Josh Oldenburg

    Josh Oldenburg Full Access Member

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    Yup only have had 10 minutes of idle time bleeding the system when I found it

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  14. Alwaysreadyrob

    Alwaysreadyrob 1994 7.3 TURBO IDI 4x4

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    An IDI superduty ? Never heard of it, and what yr. truck is it ?
    Ive never seen a spout like that on a valve cover.
     
  15. Josh Oldenburg

    Josh Oldenburg Full Access Member

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    The engine is an IH version 1988 and the truck is a 2000 f250 gasser

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