89 ethanol or 91 non-ethanol for my Sho?

[jefrobie]

Manual says minimum 89 octane...I’ve got a local station with non-ethanol 91 octane...any issues with the 91?

[Stillhunter]

The benefits of non-ethanol out weigh the octane rating. Been running 90 in my SHO

[Meleagris1]

I run 91 non ethanol.

[yam911]

There is no downside (other than cost) to using higher than the minimum octane recommendation. There is an upside to using gasoline that is not contaminated with ethanol.

I asked one engine maker if given the choice of (1) using gasoline with the minimum recommended octane rating with up to 10% ethanol or (2) using gasoline with higher than the minimum recommended octane rating with 0% ethanol and was told that the latter was highly preferred.

[printman71]

Non ethanol 91

[Tromanoski]

If I did not want to add Ringfree and Marine Stabil or its equivalent to the fuel I would run the non ethanol gas. I have had two bass boats which I bought the first one new in 1989 and kept it until I bought my second new Ranger in 2012. I probably have run maybe five tanks of non ethanol gas total in both my boats. In fact I think my 2012 that has a F150 has never had non ethanol gas run through it. But I always add Ringfree and Stabil in the proper amounts when I gas up. I have never had one problem with running E-10.