What? Maybe if you use Shady Joes Gas Company there will be stuff in the gas? Think thats why the have filters on the pumps.
Since Honda says use minimum 86 octane, thats what I use. Keep in mind that these engines are designed where their gasoline quality is much lower then ours. So you get the bonus of higher quality gasoline and new and inspected tanks at the big chain gas stations.
Heck mine even runs on old whiskey.