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It is currently Fri Mar 29, 2024 9:28 am
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JBsuperG
MMT Pro Member
Joined: Wed Mar 21, 2018 2:51 pm Posts: 263 Location: Michigan
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Oil looks off
20181202_100743.jpg This oil came out of a 60 horse Bigfoot Mercury 4 stroke motor. This is what it looked like after settling overnight. I was wondering why it might look like this. I put some in a glass jar to settle overnight also. I did not see any water separate after sitting overnight. The motor is only 3 years old
Any thoughts?
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Sun Dec 02, 2018 9:17 am |
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Gigafowl
MMT Elite Member
Joined: Tue Jan 13, 2009 7:19 pm Posts: 6441 Location: Trinity Bay - Texas
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Re: Oil looks off
H2O - gasket time....
Water emulsified in oil...
_________________ Eat - Sleep - Hunt ! ! !
"It is good to have an end to journey toward; but it is the journey that matters, in the end."
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Sun Dec 02, 2018 10:20 am |
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JBsuperG
MMT Pro Member
Joined: Wed Mar 21, 2018 2:51 pm Posts: 263 Location: Michigan
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Re: Oil looks off
Ya. The more it settles the more you can see the water on top. The oil I put in the jar has a distinct line forming at the top now.
I was going to put it in storage today, but decided to drop it of at the shop.
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Sun Dec 02, 2018 5:45 pm |
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Gigafowl
MMT Elite Member
Joined: Tue Jan 13, 2009 7:19 pm Posts: 6441 Location: Trinity Bay - Texas
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Re: Oil looks off
Good that you caught it - likely just a head gasket...
Compression test should show which cylinder is the culprit...
_________________ Eat - Sleep - Hunt ! ! !
"It is good to have an end to journey toward; but it is the journey that matters, in the end."
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Sun Dec 02, 2018 6:14 pm |
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JBsuperG
MMT Pro Member
Joined: Wed Mar 21, 2018 2:51 pm Posts: 263 Location: Michigan
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Re: Oil looks off
Turns out it was a bad thermostat. Engine was running cold allowing for condensation. The EFI was feeding it extra fuel as well. You could smell the gas in the oil.
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Sun Dec 23, 2018 1:14 pm |
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