Xar

I have a 13 GT, I know with 91+ octane fuel I can get those extra 8 horses, most of the gas here is E10. Is there any difference in finding non E fuel and running 91 or 92 octane?

I'm using Shell V Power 91 and things seem good but am curious what all of you think about fuel...

Gone Galt

E10 has a slightly different stoichiometric air/fuel ratio than "100% gasoline".

I run 93 octane in mine, life is too short to give up any horsepower!

going for broke

I don't know of many places that offer 100% gasoline anymore. We sell what is labeled as a "rec fuel" it's mainly sold at marinas and we sell it to many people for weed whackers and older card, and things that are easily subjected to high moisture levels. The e10 fuel is fine so long as your not leaving the same tank of it in your cars for months on end.

BigR

Owners Manuel says 87 ...l use 87 ..... I tried 91 on a few tanks in a row, noticed nada ...

Save your money.....use 87

MikeD73USA

I think there are some ethanol gas treatments on the market now, idk if they help.