octane

[408F150]

There's no risk of running higher than normal octane (assuming it isn't packed full of cheap additives) as far as I've heard, however our engines aren't efficient enough to see any benefit from it unless you're driving around in heat so high you're getting premature detonations (pinging). Higher octane's only benefit in most engines is it takes a higher temperature to ignite the fuel so it allows higher compression pistons and more aggressive cams to be used. I've put aviation fuel which is I think 108(?) in my quad that is engineered to run on 91 and saw only a slight difference, and that's in an engine with much higher compression than my truck. Could be wrong but that's just what I've experienced first hand