oil in coolant . 3.4 engine 2002 impala?

Hey folks ,

would lower intake manifold gasket failure cuase oil to leak into coolant? i found oil in the coolant but there is no coolant in the oil.



its not trans fluid in coolant , its engine fluid , the trans line in the radiator are find

Update 2:

engine oil , not fluid sorry

5 Answers

  • 8 years ago
    Favorite Answer

    It is highly unlikely that engine oil found its way into the coolant on a 3.4. Are you sure it's not just sludged up and dirty coolant?

    If you did have engine oil (or trans fluid for that matter) in your cooling system it would look very goopy and foamy. Little brown spots floating in there are probably just a sign that you are due for a coolant flush. Put green regular antifreeze back in, skip the Dex-Cool, it's crap.

    I would have the car inspected and pressure tested by a pro. Intake gasket failures are super common on your car but typically leak down the sides of the engine, easily visible. If you don't see them leaking externally, they're more than likely ok.

    Source(s): Shop owner and 20 years experienced ASE Master.
  • bihler
    Lv 4
    4 years ago

    2002 Impala Radiator

  • 8 years ago

    A trusted private mechanic or Chevrolet Dealership will pressure test the transmission cooler in the radiator to see if it is leaking transmission fluid into the cooling system. If that happens, the radiator will need to be replaced.

    The cooling system will need to be drained, flushed and CLEANED tto get the oil out of the cooling system. Oil will eventually attack the rubber hoses for the heater-core and radiator hoses.

    Source(s): Alignment, suspension and brake shop.
  • 8 years ago

    Head Gasket.

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  • 8 years ago

    the oil cooler inside the radiator is leaking ,so that means that you will have to get a new radiator, try this site before you buy one from the auto parts store. radiatorwarehouse.com ,,,,,,,,,,,

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