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Oil mixing with my coolant

Tiny
BIGWYLL75
  • MEMBER
  • 1999 LINCOLN NAVIGATOR
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
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Sunday, March 7th, 2010 AT 11:42 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,895 POSTS
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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Monday, November 20th, 2017 AT 1:16 PM

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