Here it goes. I have 2007 420FM and where I am ALL gas stations have 10% ethanol in their regular gas. If I go to premium fuel a couple places have no ethanol in their premium gas. I was told that since the 420 is not a high performance engine premium fuel can actually be a detriment.
Which is the lesser of two evils? Or is higher octane fuel perfectly OK? BTW I run Stabil in all my toys all the time.

Thanks

 

The stabil is unnecesary if you use up the tank full in less than a month.
I have the same choices here, and like the owners manuals say, dont store a quad with ethenol in the tank, so im thinking that running with ethenol isnt the greatest either.
The alcohol also reduces the BTU content of the fuel, which does lean out the mixtures, so if youre gonna use ethenol, be aware its about 10% leaner than pure gas.