Posts: 3480
Location: Elk River, Minnesota | ArtieT - 2/19/2019 8:06 AM
Is ethanol free, recreational fuel, and non-alcohol gas all the same? I've seen all three and it seems like recreational fuel is usually the most expensive.
They are not the same. The 91 octane non-ethanol fuel will burn a little more smoothly, and will give you a very very slight increase in output.
Both fuels work well in your equipment, and someone will most likely tell you "only run non-ethanol fuel in your outboard." because the alcohol blended fuel will enhance the deterioration of gaskets, fuel lines, etc. Most, if not all of those situations occur from an engine that is not properly stored or taken care of. I've run 87 ethanol blended fuels in my engines for as long as I remember. Engines from the 70's and on, and have yet to have any issues with any engine. The ONLY one I would ever be worried about would be the 1973 Johnson 20 hp that is still in the family as the fuel lines on the motor have never been changed and are not alcohol resistant, and due to being 46 years old...probably need to be changed anyway.
Run the 87 octane all you want....the engines of today are designed to handle alcohol blended fuels. At the end of the season, be sure to stabilize the fuel, and/or run the fuel out of your motor... All will be good for next season.
Steve
Edited by VMS 2/20/2019 3:51 PM
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