Thread: 800GS owners?
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Old 02-08-2009, 11:24 PM   #19
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Joined: Mar 2008
Location: Central PA
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The AKI (anti-knock index -- also known as "octane rating") of the fuel
is an average of two different methods of computing the fuel's ability
to resist engine knock. Regular unleaded gas in the U.S. has an
anti-knock index of 87, while mid-grade is usually 89, and premium
typically is 91 - 93. The higher the number, the more anti-knock
protection the fuel offers
this article is come from
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