Mixing water and oil in the radiator

1999 NISSAN MARCH
150,000 MILES • 1.3L • 4 CYL • 2WD • AUTOMATIC
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SGWENAS
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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?
Feb 8, 2018 at 12:47 AM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
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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
Feb 8, 2018 at 1:34 AM
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SGWENAS
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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.
Feb 8, 2018 at 4:56 AM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
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
Feb 8, 2018 at 4:59 AM
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