I had to drive over to Oconee county today, about 100 miles one way. We don't have any Shell stations around here so on the way I stopped and filled up with V-Power. What a mistake. There is no way this gas was 93 octane. The tanker must have mixed up and put 87 in the premium tank. I can tell when I have run 87 in my engine because the knock sensor cuts back the timing and performance suffers. My normally peppy 300M ran like a dead dog the whole way there and back. It was like driving a 4 cyl car. No more V-Power for me.