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I always use premium or the highest octane possible since as pointed out they were designed to run on regular leaded gasoline and without the lead now higher octane is prudent
Quote from: Danno on July 03, 2011, 12:19:15 pmI always use premium or the highest octane possible since as pointed out they were designed to run on regular leaded gasoline and without the lead now higher octane is prudent Incorrect. All of the sohc4 bikes were designed with unleaded fuels in mind, and almost all were meant to run on gas with an octane rating that is the equivalent of today's 87 octane (in the U.S. octane rating standard). Go back and read the entire thread.
Quote from: Gordon on July 03, 2011, 10:57:01 pmQuote from: Danno on July 03, 2011, 12:19:15 pmI always use premium or the highest octane possible since as pointed out they were designed to run on regular leaded gasoline and without the lead now higher octane is prudent Incorrect. All of the sohc4 bikes were designed with unleaded fuels in mind, and almost all were meant to run on gas with an octane rating that is the equivalent of today's 87 octane (in the U.S. octane rating standard). Go back and read the entire thread.Not trying to be argumentative Gordon but we didn't get ULP until 1980+ the sohc 4's were all but gone by then.I have never had any problems running higher than 87 octane in my bikes and Terry does the same with no problems at all. Why do you think they will run better on low octane fuel.? In my experiences they are more likely to ping under load with lower octane fuels......Curious