Why is there oil in my cooling system? on 2002 Kia Sportage

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
The heads have been change, theres no water on any of the dip sticks.
(1) Answer
(1) Comments
I don't know, will ask the mechanic. Someone just told me about the oil cooler,
and Thank you for reply.
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