I've acquired some information about Ethanol and that is if left in the fuel tank for a conderable (questionable) time, this is where the harm comes in.
Of course, I am speaking to people who actually
ride their scooters.
![Wink ;)](https://www.kymcoforum.com/Smileys/default/wink.gif)
The shop had a guy last year who bought a scooter two years ago, and was
demanding his money back, 'cause every spring he needed a new battery and a carb cleaning (ignoring the dealer-supplied storage recommendations). Why some people buy scooters, I will never know.
.