Fluid leak

1998 CHEVROLET CHEYENNE
156,000 MILES • 3.8L • V8 • 2WD • AUTOMATIC
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PAM GROFF
  • MEMBER
  • 2 POSTS
Fluid drains from the radiator into the oil pan.
Dec 8, 2019 at 3:33 PM
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PAM GROFF
  • MEMBER
  • 2 POSTS
What causes the above condition? Fluid draining into oil pan is coolant.
Dec 8, 2019 at 4:38 PM
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SCGRANTURISMO
  • CERTIFIED EXPERT
  • 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
Dec 8, 2019 at 5:14 PM
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