Fluid leak

Tiny
PAM GROFF
  • MEMBER
  • 1998 CHEVROLET CHEYENNE
  • 3.8L
  • V8
  • 2WD
  • AUTOMATIC
  • 156,000 MILES
Fluid drains from the radiator into the oil pan.
Sunday, December 8th, 2019 AT 3:33 PM

2 Replies

Tiny
PAM GROFF
  • MEMBER
  • 2 POSTS
What causes the above condition? Fluid draining into oil pan is coolant.
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Sunday, December 8th, 2019 AT 4:38 PM
Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

Usually if you have coolant mixing with the oil, or coolant getting into the oil pan this is a sign of a blown head gasket. It can also be caused by a cracked cylinder head or engine block, but these happening are far rarer than a blown head gasket. Here is a link below explaining what is going on:

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

You can also confirm a blown head gasket with a compression test.Here is a link explaining how to do that:

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

Please go through these guides and get back to us with what you find out. We can go from there.

Thanks,
Alex
2CarPros
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Sunday, December 8th, 2019 AT 5:14 PM

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