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Possible blown head gasket?

Tiny
YOUNG MECHANIC
  • MEMBER
  • 2004 CHEVROLET TRAILBLAZER
  • 4.2L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 195,600 MILES
I drained the oil on my vehicle and it smells like a two stroke engine and looks brownish. After that I checked the coolant reservoir and radiator cap and it's still the same old dexcool color.
If my vehicle's head gasket is blown wouldn't I get oil in my coolant?
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Thursday, May 20th, 2021 AT 10:32 PM

1 Reply

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
You can get them mixed with each other or one in the other. So we need to test the head gasket to start. Here is a guide that will help with this:

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

Also, here is a guide that will help with this issue in general:

https://www.2carpros.com/articles/coolantantifreeze-in-the-engine-oil

Let's test the head gasket first and then we can go from there. Let us know if you have other questions.
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Friday, May 21st, 2021 AT 3:50 PM

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