Oooooooor, someone could have drained the coolant into a drain pan with oil in it, then dumped it back in the radiator....
where else would the oil come from? unless the other going theory is correct, p/o did a dumb and used dirty coolant .
For clarification, I didn't call the current owner dumb.why do you call him dumb???......I bet if you checked the guys on this forum to find out the bonehead mistakes we have all made I guess you can call us all dumb.
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