15% is the limit for E15.15%? They tell us ours is 10% max. We can still find some stations with "pure" 93oct / no ethanol which I used to fill my last Chevelle with.
I thought once oil gets diluted with gas, its very difficult to get rid of gas, even if you drive for hours it would not evaporate out?
Gasoline (and ethanol) will evaporate more quickly with heat, but fuel always has some additives and it's those additives in the crankcase that have me wondering... do they stay in the oil or do they also evaporate? Are the fuel additives by their chemistry/nature not considered a problem when in motor oil? Is there even enough concentration of fuel additives to be concerned, depending on the amount of fuel dilution ?
Only slight vacuum. How is flash point relevant?... Much of the time the crankcase is under vacuum, which lowers the flashpoint of the liquids inside. ...
I think they meant boiling temp.Only slight vacuum. How is flash point relevant?
Lower Flashpoint would indicate that your oil likely has fuel dilution!I think they meant boiling temp.
Flash point is the temperature where vapors are being emitted from a liquid. Even a slight drop in atmospheric pressure drops the flashpoint. What this means is that there is Fuel vapor being pulled back into the intake even at lower oil temperatures As it flashes out of the engine oil.Only slight vacuum. How is flash point relevant?
Flash point is the lowest temperature the vapors of a flammable compound will ignite when an ignition source is introduced. Vapor pressure is the correct term for what is being discussed.Flash point is the temperature where vapors are being emitted from a liquid. Even a slight drop in atmospheric pressure drops the flashpoint. What this means is that there is Fuel vapor being pulled back into the intake even at lower oil temperatures As it flashes out of the engine oil.
What happens to the quality of the oil , after it is diluted to say 3-5 % then is boiled off?
You are correct. I looked it up last night but Went down the rabbit hole of equilibrium and fell asleep.Flash point is the lowest temperature the vapors of a flammable compound will ignite when an ignition source is introduced. Vapor pressure is the correct term for what is being discussed.
Ed
And actually you don’t get acid formation directly from the sulfur compounds in the gasoline, acid comes from the sulfur oxides and water after combustion.Used to get a lot more acid forMarion from gasoline in oil, but gasoline now is lower in sulfur. the main issue is there