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Old 07-06-2024, 15:26   #1
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oily coolant

ok here goes, my first time to message with Cruisers Forum.

My boat is a Pearson 31 and has a 2GM20f engine. Runs great, no knocks or bangs and exhaust is clean.

Checked my coolant container and found some oil on the bottom. Trying to figure where it is coming from and how it got there. No leaking oil anywhere.
Been told that it is a leaky head gasket. Any ideas what it is and how to fix it?
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Old 07-06-2024, 16:53   #2
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Re: oily coolant

Welcome to Cruisersforum.


First issue-- oil is LIGHTER than water/coolant and will float on TOP of coolant.


So, wonder what you have in the bottom of the coolant reservoir?


Certainly worth draining coolant, flushing coolant system and installing new coolant/distilled water and seeing what happens.
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Old 07-06-2024, 18:05   #3
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Re: oily coolant

i would try flushing the coolant system as well .. probably needs to be done anyway. a good time to check the coolant pump condition too.
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Old 07-06-2024, 18:05   #4
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Re: oily coolant

I drained and replaced the coolant two weeks ago and Then took a 20 mile trip, motoring most of the way and when I got back checked the coolant and found the oil. It was like droplets attached to the bottom third of the "gravy picker upper" that I borrowed from my wife. (clear tube with squeeze bulb on end.)

But I can flush it and add coolant again and see what happens.

Can't figure how oil can get in the coolant.

thanks for the help
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