The fuel was 12 or 13 gallons 93 to 2 gals 110. I calculated 96 octane with that mix. Tank is now down just under half, so i'll fill back up with 93 and shouldn't have much 110 in it. I have seen in the past 110 knock the crap out of your number with pump gas engines. My 408 lost 3 tenths once with straight 110 vs straight 93. It was 11.3:1 compression. Over octaning may be good for the engine, but not so good for your time slip IMO. There's a balancing act there for sure.