Octane - Page 4 - Steve Saunders Goldwing Forums

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post #31 of 36 (permalink) Old 04-22-2017, 11:12 PM
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Originally Posted by RKB53 View Post
I hate to bring this topic back to the top of the list again however I saw an interesting Honda label on the right side cover of my 99 wing. It states that the fuel requirements are 91 yes 91 octane, yet the owners manual says to use 87. I must have looked at that label 1,000 times but I guess I never really read it. Am I the only one in the world that has this label? It is very strange, however the label had to be put on by the factory because I've owned the bike since new. Go figure
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post #32 of 36 (permalink) Old 04-23-2017, 07:39 AM
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There are different methods for calculating octane. The ratings can differ by several points, up to about 12. Different country's have adopted different standards too.

Perhaps that's the source of the discrepancy.

https://en.m.wikipedia.org/wiki/Octane_rating

Bruce

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post #33 of 36 (permalink) Old 04-23-2017, 07:50 PM
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Originally Posted by OldSchool_IsCool View Post
There are different methods for calculating octane. The ratings can differ by several points, up to about 12. Different country's have adopted different standards too.

Perhaps that's the source of the discrepancy.

https://en.m.wikipedia.org/wiki/Octane_rating
In the US, they add Motor Octane and Research Octane and divide by 2 to get the gas pump number.
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post #34 of 36 (permalink) Old 04-23-2017, 10:17 PM
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Just put 87 octane for the first time in my 89 gl1500. Actually seems to run better. What a savings

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post #35 of 36 (permalink) Old 04-23-2017, 10:19 PM
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So I looked today my Non-ethanol is 91 octane, No problems running it been through 2 tanks this weekend alone.
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post #36 of 36 (permalink) Old 04-23-2017, 11:22 PM
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If a lower octane is used in most engines it will not be an issue as long as the engine is not pushed to it's limits or "lugged." If the engine is running free and being happy it is not an issue. If you hear serious ping then it is time to downshift. Slight ping under heavy loads is actually a good thing. It is an indication that the motor has the correct octane.
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Worked on the "big rigs" for 45 years now just riding my Wing whenever I can. Gets cold in Wisconsin.
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