oil mixing with my coolant

1999 LINCOLN NAVIGATOR

BIGWYLL75

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Engine Cooling problem V8 Four Wheel Drive Automatic 145335 miles

I flush my radiator twice a month but I keep having oil in my coolant , so I had the heads checked and they were fine all the power and everything so what I need to know is what is causing this, thank you

Mar 7, 2010 at 11:42 AM

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Hello,

Yes you have a oil cooler that has failed which is located by the oil filter. What happens is the oil pressure is greater than the pressure in the cooling system so engine oil gets pumped into the radiator. Here is a guide and some diagrams (Below) that will help you get the problem fixed.

https://www.2carpros.com/articles/coolantantifreeze-in-the-engine-oil

Check out the diagram (Below)

Please let us know what happens.

Cheers, Ken

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Nov 20, 2017 at 1:16 PM