Water in the oil

Tiny
DFLEENER77
  • MEMBER
  • 2010 LINCOLN MKZ
  • 3.5L
  • V6
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
Water is mixing in with the oil. It seems like when I add water without it running it goes straight to the oil pan but I might just be paranoid. Do you think it's a head gasket or something else?
Friday, March 27th, 2020 AT 3:53 PM

6 Replies

Tiny
BMDOUBLE
  • MECHANIC
  • 1,139 POSTS
These engines are notorious for water pump failures, and the reason for coolant getting into the oil pan is because the water pump is driven by the timing chain and thus is in the timing cover. Not an easy quick job like an older vehicle unfortunately!
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Friday, March 27th, 2020 AT 4:40 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,724 POSTS
Hi,

Most commonly, it is a head gasket. Do me a favor. Take a look through this link. It discusses how to identify head gaskets issues.

https://www.2carpros.com/articles/head-gasket-blown-test

I have to be honest, chances are it is a head gasket. Once you look through the link, let me know if you feel the same. I can help get you through repairs if we determine that is the problem.

Just another thought. It is a good idea to try a compression test to see if there is a cylinder that has low compression. That is usually another good indicator that a head gasket has failed.

https://www.2carpros.com/articles/how-to-test-engine-compression

Let me know.
Joe
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Friday, March 27th, 2020 AT 4:43 PM
Tiny
DFLEENER77
  • MEMBER
  • 3 POSTS
I also noticed moisture on intake.
Hopefully you can see it.
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Sunday, March 29th, 2020 AT 5:26 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,724 POSTS
On the front of the intake, I see something that appears white. Is that oil or a reflection? I ask because that is what oil and coolant mixed will often look like.

Have you had a chance to inspect the water pump and review the link I added last time?

Joe
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Sunday, March 29th, 2020 AT 6:10 PM
Tiny
DFLEENER77
  • MEMBER
  • 3 POSTS
No I have not and that is a reflection.
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Monday, March 30th, 2020 AT 7:36 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,724 POSTS
Okay, that's good news. I thought something was spraying contaminated oil on it. When you get a chance, let me know what you find.

Joe
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Monday, March 30th, 2020 AT 8:17 PM

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