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Without any other info I'd say you have a bad headgasket or a cracked head/block.

Generally oil has to be pressurized to show up in coolant, or the reverse would be true and you'd have coolant in the oil also making it milky white.

So... oil is leaking from somewhere pressurized to coolant.. Pressurized oil only comes up to the head in one passage, and that has likely developed a leak to the nearest coolant passage, most likely through a bad head gasket.

This is more likely if it's been recently overheated.

Some vehicles have an internal oil cooler located in the radiator. If this cooler has a leak then you will get oil in your radiator. If the fluid inside the radiator is a pinkish, reddish color the it would be the internal transmission dooler in the radiator

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โˆ™ 2015-07-16 19:23:37
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Q: If there is oil in radiator not in block what is the problem?
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