I use 91 , its the highest here, Sunoco has 93 our dealer says Sunoco blends Ethenol to get it to 93 and not to use it. I have tried it seems fine. I try and run the highest available.
Now I am confused ( doesn't take much ) my manual says up to 10% ethanol is ok up to 10% methanol is not ok. My question, is the manual incorrect and I should stay away from 10% ethanol. I can get 94 octane with ethanol or only 91 without where I am.
Here in Canada they have mandated the Ethanol mix,so I have been running Sunoco ultra 94,at least they state it on their pumps.and it gives me an octane rating 3 higher then Shell or the others.JMO