Joined: Jun 2017
Location: San Joaquin Valley
I run 87 octane regular in my 2016 GT. I usually get my gas from Costco. One time the at the Turlock Costco the regular pump wasn't working and they let us pump premium for the same price as regular. I didn't notice the difference in performance in normal street driving with 1/4 of regular remaining in the tank and the rest 95 octane premium. I have never chosen premium over regular, and it hasn't caused any problems in 38,000 miles.
2010 Kona Blue GT Premium traded in June 2016 for a 2016 Oxford White GT Premium with Ceramic interior. Automatic transmission, Sync3, p265/35r20 tires, Shaker audio system. Other vehicles 1964 Pontiac Catalina 389, 1972 Pontiac Lemans 400, 1967 Ford F-100 352, 2016 Ford F-350 Dually, 2003 Ford Crown Victoria LX.