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Ed hit the nail on the head. Use regular fuel and send the money you save to me.
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I have also heard it said (have not yet found the source, though) that there are fewer BTUs (energy content) in a gallon of "premium" fuel than there are in a gallon of "regular" fuel.
Going along with Nessism's theme of slower burning, add in that there is also less energy, there is just no way that you can add performance by simply using "premium" fuel.
It was designed to be slower-burning and harder to light so that it would resist pre-ignition caused by the heat of increased compression ratios.
Any increase in performance came from the increased compression ratio, not the fuel.
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mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
#1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
#2 son: 1980 GS1000G
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In addition, in colder weather , some 87 octane designed vehicles will exhibit a no start or hard start condition when fueled with 93 octane..Comment
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