If high octane fuel made engines start easier, they wouldn't use 87 octane pump fuel in the squirt can to start 10,000hp funny car drag engines. I would theorize that, depending on your stock compression ratio, it may not start at all on higher octane fuel. These old tractors were built to burn spotty octane, low quality fuel by today's standards. My Super 55 manual states it is a "modern high compression engine and requires minimum of 86 octane fuel". I believe it is 7 to 1 on it that they call high compression.
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Today's Featured Article - The David Brown Rose Badge - by Samuel Kennedy. In the 13th century civil war was raging in England. Two English noblemen were involved in a conflict which became known as the War of the Roses. The Duke of York had as his emblem a white rose and the Earl of Lancaster had a red rose. Today the white rose is the official emblem of the county of Yorkshire and the red rose has been adopted by the neighboring county of Lancashire.
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