Normal
I typically run 87 octane 100% gasoline from a branded station. As far as detergents etc., it's all fairly similar as long as it's from a Top Tier station. Top Tier Gasoline. I drive mostly around town during the week and I figure the 10hp isn't a really big deal since the torque stays the same. Also, I don't see the point in switching back and forth between 87 and 91 etc. unless you're going to empty out the tank between fill ups.