i just changed the water pump on my 98 chevy malibu and my water is mixed...

rjclassof_07

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...with oil what sign is that? and its still leaking a little bit but not as much as it were
 
98? just run it, don't sweat the small crap. keep an eye on it and don't let the old lady behind the wheel
 
It's not too far fetched to have a transmission cooling tank leak inside the right hand expansion tank of the radiator. A simple pressure test could bare this out. It can't be an intake leak as the intake is bolted on the side of a four cylinder motor.
 
It might be a bad head gasket. If the pump is still leaking, you might have pinched the gasket upon installation or you need to tighten the bolts a bit more. Did you change the hoses as well? The old ones may have torn when you removed them from the old pump. Good luck.
 
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