Try to run what the OEM recommends.
Their engineers just might know more than most nitwits.
This nitwit will also tell you that more octane is a waste.
If you don't need it, it ain't gonna do anything for you.
I know you’ve worked in the fuel industry and maybe you can explain to me. My pickup says to run basically whatever, E85/87octane regular, but for best performance or when towing to run 91. Is it because it changes the timing when under load or driven hard due to the computer mapping the throttle input? It can’t be compression since it doesn’t swap the pistons out when you hit the tow haul button.
Like 10gaugemag with his GMs my Ford will show a slight increase in mileage but not enough to offset the cost of Super. My old truck would rattle and knock like dammit on regular 87 under load but the new one I can’t tell a difference.
