Today I thought I was going to have to make an appointment at the dealer. Truck started running bad at anything above 1/2 throttle and above 3k RPM. No power, and wouldn't shift. Almost seemed like it was hitting a traction control fuel cutoff. Had about 1/4 tank when I first started to notice a slight issue and it got worse as fuel level went down. On a hail Mary before calling dealer, I filled up the tank with some 93 from a station I use regularly, and truck started running better almost immediately. The last time I filled up, I filled up at a station I had sworn off before because they always looked like shady stations you'd get bad gas at. But they have been remodeling all the local ones, and they even got Top Tier designation. So figured I give them a try since they were cheapest option, and top tier. Guess that was a bad jdea. They are back in the do not use list.