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Can you tell what kind of oil it is? ie: is the oil red? Many automatic transmissions use an oil cooler internally in the bottom/side tank of the radiator. If this has ruptured inside the rad, it will be leaking ATF into the coolant. Check your transmission level, and see if it is down.
Easiest and cheapest fix is to take the two cooler lines off and loop them together, and then plug up the fittings on the radiator. I would only advise this on an older vehicle you do not tow or haul heavy loads in. The next option would be to install an auxilliary oil cooler in front of the rad, hook your lines up to that, and again plug up the fittings on the radiator.
What kind of vehicle and engine is it?
Many diesel engines use an engine oil cooler, that also will push oil into the cooling system if it leaks internally. Only solution in that case is installing a new cooler.
Hope this helps, but could give better info with more detail from your side.
Good luck
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∙ 15y ago
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