Butthead
Well-Known Member
What do you guys use, I use 95, don't know if there would be any advantage going to 98 except a bigger hole in my wallet
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I always run my bikes on the minimum recommended octane. For most bikes, that's 87 octane here (91 RON).
Research Octane Number (RON)[edit]
The most common type of octane rating worldwide is the Research Octane Number (RON). RON is determined by running the fuel in a test engine with a variable compression ratio under controlled conditions, and comparing the results with those for mixtures of iso-octane and n-heptane.
Anti-Knock Index (AKI) or (R+M)/2[edit]
In most countries, including Australia, New Zealand and all of those in Europe,[citation needed] the "headline" octane rating shown on the pump is the RON, but in Canada, the United States, Brazil, and some other countries, the headline number is the average of the RON and the MON, called the Anti-Knock Index (AKI), and often written on pumps as (R+M)/2. It may also sometimes be called the Posted Octane Number (PON).