It can be a mess IF you leave ethanol in a tank and in the carberators, when you return in three months...
I do NOT store anything with ethanol gas in it...
Not IF I know it`ll be sitting,
D
Agree.
Our ethanol gas is poor quality.
Your Mileage May Vary, but:
I once asked the busiest most reputable small-engine mechanic around here, how to combat the inevitable varnishGLUE buildup from our engines, from the weedeater & chainsaw to the old gas model John Deere 40.
His answer: "put 2 oz. of regular ol' transmission fluid in every gallon. And don't just fill the tank; run it for at least 10 minutes on that mix, then top off your tank again. If everybody did that, my work would drop by 30%, and I could go riding more. Been telling everybody that'll listen."
So now everything that burns gas but mostly sits during the winter gets this treatment. And even daily drivers get it every fifth tank.
Not saying this is the best answer; it's what works for me.
For 9 years now.