My 06 Chrysler 300 had oil going into the radiator. The shop is telling me the engine is holding pressure and are ruling out a blown head gasket. Also said the oil cooler is holding pressure as well. What else could cause this problem?

Asked by Sep 04, 2015 at 11:09 PM about the 2006 Chrysler 300 Limited

Question type: Maintenance & Repair

Oil mixing with coolant.  Engine did not run hot nor was there any thick smoke from the exhaust.  Engine and oil cooler are holding pressure.  What would cause this problem?

3 Answers

62,985

Automatic transmission fluid. If you have a transmission fluid cooler in the radiator (most automatics do) it's probably leaking. The "oil" that your seeing is most likely automatic transmission fluid. HTH. -Jim

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20,735

yes is ony in the over flow tank??if so just flush it out and check it again in a few days!!!

1 out of 1 people think this is helpful.
88,765

Intake leak, casting flaw in the engine block, engine oil cooler if equipped, as mentioned above internal leak in the radiators transmission cooler, cracked cylinder head. HTH

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