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3.8l Oil in Coolant

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  • 3.8l Oil in Coolant

    My 96 bird was recently overheating because the fans weren't coming on so I replaced the coolant temperature sensor. I also noticed that theres oil in the coolant now.
    Why is there oil in the coolant

  • #2
    When it overheated you probably blew a head gasket. Coolant is now finding it's way into the combustion chamber. Does the car blow any white smoke when at idle after all warmed up?
    sigpic
    1994 Camaro Z28 83K M6, CAI, AFR 190cc, 11.6:1, Hooker headers, Hooker ORY, Mangnaflow exhaust, AI 230/238, 1.6 RR, B&M Short throw, Hays clutch, 4.10 gear.

    Member: The Mid Michigan Modern Muscle Car Club

    Originally Posted by 1BADAIR
    manuals should be launched off the limiter and the throttle shouldn't leave the floor til 10 feet after the finish line

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    • #3
      Car doesnt smoke at all, but somehow the oil is getting into the coolant.

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      • #4
        cracked water jacket somewhere... same thing happened to me..would fire the car up..get down the street and shes overheating.. thought the pump went so i bought a new one and when i was draining the coolant i got a large amount of oil along with it.. called my engine guy to come by and he just shook his head..
        i ran my car pretty hard one night and got her real hot and just shut her off right away so i know she got hotter..im guessing that lead to my prediciment..after that wouldnt stop over heating and then obviously the oil..
        Last edited by Caveman; August 10th, 2009, 02:00 AM.
        < Black Betty >

        '94 Formula, 385ci, T56, Forged ESP internals and LOTS of bolt ons www.cardomain.com/ride/3000929


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        • #5
          I would bet a head gasket is blown or a cracked cylinder head.

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          • #6
            headgasket.

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            • #7
              agree with everyones comments, pull the heads, if you don't see the obvious blown gasket then have the heads checked.
              Is this and Auto? if so, you may just got a leak of trans cooler to rad. when over heated. even though trans fluid is red when mixed it will look like oil.
              Last edited by 98blackbeauty; August 10th, 2009, 07:20 AM.
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              1998 Trans Am Convertible A4 - WS6 hood, WS6 air lid, WS6 rims, drilled/slotted rotors.

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