What does "making oil" mean?

Mighty Sylvan

Active Member
I have read people refer to their outboard is "making oil". What does that mean? I think it has something to do with the fuel system. Maybe someone could let me know.

Thanks
 
Usually when an engine is running to cold the fuel entering the cylinders isn't completely burned off and the residue slips past the rings and enters the crankcase. That unused fuel mixes with the oil and over time will raise the oil level in the crankcase. If this goes on too long the fuel will dilute the oil to the point where some lubrication qualities are lost and moving parts could start to show signs of friction damage. Not a problem with 2 strokes obviously, quite common in 4 stroke kickers when a t-stat sticks open. Another way for a crankcase to fill up with fuel is when a fuel pump diaphragm develops a tear and raw fuel passes past the diaphragm and directly into the oil reservoir. This will fill the crankcase quickly.
 
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Well you take some isopr.............


Oops, wrong board...


My bad...:o
 
Lippy you are a funny guy.
 
good one lipper,,,, hint- i am at post 420...puff puff give
 
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Lippy whatever in the world are you talking about?;)
 
Think he's being funny there...try putting isopropyl in your gas and see what eventually happens to your engine.
 
Wrong iso.... searun;)... wrong application for that matter too :D
 
Making oil

That is what we do in Fort McMurray, maybe all those motors should be here helping us.

I have read people refer to their outboard is "making oil". What does that mean? I think it has something to do with the fuel system. Maybe someone could let me know.

Thanks
 
Hmm could turn that into a high power drink blender to make slushes.
 
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