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Location: 31 | Almost everything in this world has an answer that lies somewhere in between and therefore subject to interpretation, IMHO there is not a 100% right/wrong e10 vs ethanol free answer for our OB motors here.
At pretty much opposite ends of the spectrum you have a guy like me who has had many fuel and fuel system related problems (including catastrophic failures), and a guy like VMS who apparently has never really had any serious issues.
I thought SteveW put forth a very convincing argument. However, he chooses to believe Oklahoma States position, while I choose to follow Yamaha's guidance. No problem there but I also don't feel comfortable with “looking for signs” or “following the money” as a basis to help make decisions when it comes to something as important and expensive as my outboard motors.
“There is no way ethanol can phase separate in the fuel unless water is introduced through the system by leak or evaporation, in which case you have a fuel system issue or are storing your ride in a very humid location for long periods of time.”
Is the second 1/2 of this quote true or false?
I happen to live in an area that at times can be incredibly humid, I also store and of course operate my boat in a humid/wet environment. My boat can (and does) sit in this same humid environment for months at a time.
Now, I don't like spending money that's not necessary any more than the next guy, but just the fact that ethanol attracts water and I've had so many bad experiences with fuel problems looms very large for me.
Some other contributing factors that have helped me to make this decision are that Yamaha recommends a minimum octane rating of 89 and the 91 ethanol free premium is closely priced, and readily available at high turnover locations for me.
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