What octane in my 2002 f4i
#31
#33
RON isn't just a UK thing. Far as I can tell, most places use that rating method. Only a handful of countries use the same rating method as the US. But it is kind of odd; if the bike is US-bound, why is it listed in RON, and if it's not US-bound, why the US EPA mention?
#34
The US uses AKI (average knock index) which is an average of RON and MON (R+M/2). Other parts of the world use RON exclusively. AKI is generally a better estimate of how the fuel will perform under the greatest number of conditions.
Octane rating - Wikipedia, the free encyclopedia
Octane rating - Wikipedia, the free encyclopedia
#36
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