oil in the coolent reserve on 2002 Buick Rendezvous

i have oil in my coolent resevior, and leaking

Asked by for the 2002 Buick Rendezvous
I had the same problem. The problem was the head gasket was blown. i had the option of replacing it which would cost me about $1500 or buy a used engine for almost the same price. of course i toke the second option.
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