Coolant in engine oil

2000 CHEVROLET MALIBU
105,333 MILES • 3.1L • 6 CYL • 2WD • AUTOMATIC
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TERES
  • MEMBER
  • 1 POST
at shop mechanic says no smoke, no leaks, but he believes coolant leaked into engine oil, open see oil then he takes cap and says it possible but doesn't know car coolant hasn't been put in reservoir half full. it idles fine .might make slight noise but runs.
Dec 22, 2020 at 11:18 AM
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ASEMASTER6371
  • AUTOMOTIVE REPAIR CONTRIBUTOR
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Good afternoon,

I would have a shop do a leak down test on all cylinders to be sure there is no leak from a head gasket.

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

They insert shop air into each cylinder and look for movement in the cooling system.

Roy

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Dec 22, 2020 at 1:45 PM
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