I have a F150 yami. I wish I had a non-ethanol supplier near me as that is all I would run. Unfortunately I don't so run 93 only. You can run 87 or better. After seeing what 10% ethanol did with my dirtbikes, I really think it is the best fuel. Unfortunately, I don't have the know how to do my own on my outboard work like I did with dirtbikes.