Posts: 3484
Location: Elk River, Minnesota | Hiya,
Here is an online link to Jerry's file
http://maintenance.yamahaoutboards.com/fuel-fuel-system/
Notice that it does not say that ethanol is bad for your engine overall, but that ethanol has properties to it that can cause your engine to get debris sucked up into the system from loosening up in a dirty tank.
Proper maintenance says to use a fuel/water separating filter which keeps any water from entering your engine, and it is also another filter system to help keep dirty tank debris from coming into your engine.
It also states that for sitting for periods of time, ethanol loses its performance and starts to break down quicker than non oxygenated fuel, but regardless, both types of fuels will break down. Thus, we should be using some sort of stabilizer in our fuel unless we are going to be burning a bunch of fuel, like on a week long vacation.
The fuel systems these days are designed to run on ethanol so the engine will be safe given you take care of it... the fuel will not rot your fuel lines as they are designed to handle it.
Steve
Edited by VMS 12/15/2017 1:21 PM
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