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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Spark Plugs Keep Fouling...
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[QUOTE="Rich Rohrich, post: 1416666, member: 16241"] The Honda minimum requirement is 95 [b]RON[/b] not 95 pump octane. It's common for US fuel to have a 10 point spread between the RON and MON ratings (called the fuel's sensitivety), so some quick math (R+M) / 2 gives us: ( 95 RON + 85 MON ) / 2 = 90 pump octane or AKI So essentially any pump premium (93-90) in the US will "technically" satisfy the minimum octane requirement of 95 RON. Outside of the US the number at the pump is RON, so the numbers are larger but the fuel has the same basic octane rating when compared using the same test methods. If mixing a race fuel and pump fuel made a substantial change in the way your bike runs something other than the final octane number was the cause. The change in the distillation curve of the race fuel is the likely cause not the higher octane. [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Spark Plugs Keep Fouling...
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