Is this bad? (Oil In Overflow) - Page 2
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Cadillac Catera and Cimarron Forum Discussion, Is this bad? (Oil In Overflow) in Past Cadillac Vehicle Discussion; I have a garage set up for automotive repairs so yes i would flush it...
  1. #16
    hemic05 is offline Cadillac Owners Fanatic
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    Re: Is this bad? (Oil In Overflow)

    I have a garage set up for automotive repairs so yes i would flush it

  2. #17
    catera00's Avatar
    catera00 is offline Cadillac Owners Fanatic
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    Re: Is this bad? (Oil In Overflow)

    So I did a test I saw done on youtube where you remove the coolant tank cap and run the car til it gets to operating temp. Once the thermostat opens, if the head gasket is blown, they say it will cause the crankcase pressure to go into the cooling system causing it to bubble out as if it was over heating. (See video) I did this and had those results. The coolant overflowed and bubbled like crazy even though it wasnt hot enough to be overheating. I am moving in a couple weeks so I havent torn the car apart yet to check the oil cooler. But Im thinkin head gasket.

  3. #18
    RippyPartsDept's Avatar
    RippyPartsDept is offline Hi, I'm Chris - Please Read My Signature
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    If you remove the cap you will boil the coolant at operating temp.

    Do a bit more research here about northstar head gaskets.
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  4. #19
    catera00's Avatar
    catera00 is offline Cadillac Owners Fanatic
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    Re: Is this bad? (Oil In Overflow)

    will do. Thanks.

  5. #20
    retho78 is offline Cadillac Owners Connoisseur
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    Re: Is this bad? (Oil In Overflow)

    any updates on this issue? Did you get it fixed?

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