Question about 1994 Buick Park Avenue

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My trans fluid is mixing with my radiator fluid, what can i do.

I have to and trans fluid every other day, and my radiator fluid is mixed with oil, I had it flushed and the oil returned. is a seal broken or do I need a new radiator?

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I hate to contradict the prior poster, but I would not see how a blown head gasket could get transmission fluid into the radiator. Motor oil, yes, but transmission fluid, no.

the transmission fluid in your tranny runs out of the transmission and up into the radiator to cool it off.

So if there is transmission fluid in the radiator, I'd look for a leak in the radiator. If it is mixing the two fluids then the leak is probalby internal.

Remember that if the radiator is now 'mixing' water and transmission fluid, there is a possibility that the fluid/water mixture may be going back into the transmission as well

Posted on May 16, 2009

  • Orlando K. Russell
    Orlando K. Russell May 05, 2012

    how big a problem Im I facing with transmission fluid/water mixing?

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The transmission cooler is in the tank on the radiator when it starts to leak it will mix with coolant and like the other post said when you shut off the car the pressure in radiator can force into trans. Get a new radiator and flush trans.

Posted on May 24, 2012

  • Alleycat May 24, 2012

    The transmission cooler is in the tank on the radiator when it starts to leak it will mix with coolant and like the other post said when you shut off the car the pressure in radiator can force into trans. Get a new radiator and flush trans.

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Sounds like you have a blown head gasket. All your sysmptoms point to that cause. I would replace the head gasket and your raditor is most likely ok

Posted on May 16, 2009

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