I've been feeding my '21 114ci M8 Freewheeler Premium gas (93-94 octane) for the last 26,000 miles, but I'm wondering if I'm wasting my money. I try to use busy gas stations so that there's a good chance that other vehicles are using Premium as well and I'm not just pumping 2 gallons of Regular before the hose starts giving me the Premium. The manual, as usual, is kind of vague on this. Discounting that the East Coast is going to be 10% Ethanol what do y'all use in your trikes?