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Mixing water and oil in the radiator

Tiny
SGWENAS
  • MEMBER
  • 1999 NISSAN MARCH
  • 1.3L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
My car listed above (k11) is mixing oil and water in the radiator, but it is okay in the engine. What might be the problem?
Thursday, February 8th, 2018 AT 12:47 AM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning.

When you have oil in the water it could be from a couple of things. If you have an oil cooler on the engine, it would do it. Beyond that, it could be a cracked block.

Roy
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Thursday, February 8th, 2018 AT 1:34 AM
Tiny
SGWENAS
  • MEMBER
  • 2 POSTS
Thanks for the response. From the engine and the sump the oil shows to be clean the mixture is showing in the radiator on top of the spark plugs.
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Thursday, February 8th, 2018 AT 4:56 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Yep, check the oil cooler if you have one on the motor.

Also, if you have a crack in the block which is common, it will do this as well.

Roy
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Thursday, February 8th, 2018 AT 4:59 AM

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