So then in my case my fuel pump was either a rebuilt or newer one that is supposed to be ok with ethanol (what was stated when i bought it on the site). So it sounds like i am ok with the 78 with ethanol. I am also guessing if i want to mix 91 ethanol free with 87 with ethanol i will be ok.
tim
91 octane ethanol free gas question
Moderators: rickf, raymond, Mr. Recovery