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Mixing water to oil (in the engine)

Tiny
PETER NGOMA
  • MEMBER
  • 2002 NISSAN X-TRAIL
  • 2.0L
  • 4 CYL
  • AUTOMATIC
  • 20,000 MILES
I noticed some mixture of oil and water in my qr20 engine, I checked the radiator if they was any oil mixed with coolant, but my coolant had no mixture with oil. I removed the head and have it skimmed replaced the gasket, started the car for 48 hours there was no mixture but when I drove it for 10ks it showed the mixture of water to oil, in an engine, checked if the car has the oil cooler. There is ATF cooler from the radiator. What could be the problem? Someone advised to skim the engine block. Can it help?
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Saturday, July 3rd, 2021 AT 9:48 PM

1 Reply

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

Water in the oil is an indication of leaking from the head gasket.

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

When the head was removed, you had it planed, which is the correct way of doing it, but did they also check it for cracks? Cracks are common and will cause this.

The block generally does not warp unless there was a severe overheating condition.

The other thing is the head bolts. Did you replace all the head bolts? If you used the old bolts, they may have failed to keep the head secured to the block. They are called torque to yield bolts and are 1-time use only.

Roy
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Sunday, July 4th, 2021 AT 2:39 AM

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