oil comming out of dip stick tube. 25 hp 4 stroke

alzie

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Jul 27, 2012
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4
I recently took the boat out of the lake for winter. When I pulled the dip stick out to check the oil, engine oil started coming out the dip stick tube. It is a 2012 and I haven't had any problems up to this point.a little confused.
 

bruceb58

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Mar 5, 2006
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30,763
Drain the oil to see if you have water in the crankcase.

With my motor, I had a stuck thermostat that caused me to develop water in the crankcase. You should inspect yours too.
 
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Alumarine

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Feb 22, 2005
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Unless you read it incorrectly or someone added too much oil, it is most likely water.
Google 4 stroke outboard making oil.
 

ondarvr

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Apr 6, 2005
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It can also be gas, and for the same reason, not uncommon. If it's gas the oil may look sort of normal, but appear thinner and smell like gas, if it's water it will normally be milky.
 

bruceb58

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Mar 5, 2006
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It can also be gas, and for the same reason, not uncommon. If it's gas the oil may look sort of normal, but appear thinner and smell like gas, if it's water it will normally be milky.
Mine had a bunch of water in it and it had not turned milky
 

Alumarine

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Feb 22, 2005
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It can also be gas, and for the same reason, not uncommon. If it's gas the oil may look sort of normal, but appear thinner and smell like gas, if it's water it will normally be milky.

Yes, it could be gas. I forgot about that.
It's possible with some models if the fuel pump leaks they can dump fuel into the crankcase.
There might be other sources as well.
See if the oil smells like fuel.
 

Silvertip

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Sep 22, 2003
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28,771
Four strokes "can" also have an issue with "making oil" due to prolonged slow speed operation, over cooling, and over-propping. The issue is that excess unburned fuel ends up in the crankcase -- hence the term "making oil." Four stroke owners needs to check the oil level regularly. A rise in oil level signifies an issue.
 
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