[MotoChief]

What fuel do you use? Dealer said to use Premium so I am. Is that what we should use? I always used the high octane in my dirt bikes as well. Just curious as what everyone else uses.

 

[MotoChief]

Okay, the Owners manual says: Use fuel with the lowest octane rating 90(RON+MON)/2

What exactly does this mean?


Oh, also stay away from ethanol over 10%.

 

[silverluxe]

It's air cooled, so try not to use ethanol blended fuel.

I'll be using 91 octane here where I live. They like putting corn alcohol in everything around here, so I sometimes have to travel to multiple gas stations before I find plain old gasoline.

 

[JustKip]

In the US and Canada, we don't use RON. We use (R+M)/2. The "M" is typically about 10 octane lower than RON, so when added and divided by 2, you get about 5 lower than RON.


This means that US and Canadian 91 octane would be about 86 in Europe, where they use RON. You can't generally get pump gas here that's actually good enough for the engine of most European bikes. Use the best you can find.

 

[PeteI]

What fuel do you use? Dealer said to use Premium so I am. Is that what we should use? I always used the high octane in my dirt bikes as well. Just curious as what everyone else uses.

I've always stuck to mid-grade no matter what the books said. I don't hold on to my bikes long enough to need a new fuel filter. anyhow 89octane is no slouch.
I always put super in the Falcon when I expect an asteroid field though...

 

[PeteI]

It's air cooled, so try not to use ethanol blended fuel.

I'll be using 91 octane here where I live. They like putting corn alcohol in everything around here, so I sometimes have to travel to multiple gas stations before I find plain old gasoline.[/QU





ahhhhhhhh, corn oil is the Devil!

 

[ralph]

In the US and Canada, we don't use RON. We use (R+M)/2. The "M" is typically about 10 octane lower than RON, so when added and divided by 2, you get about 5 lower than RON.


This means that US and Canadian 91 octane would be about 86 in Europe, where they use RON. You can't generally get pump gas here that's actually good enough for the engine of most European bikes. Use the best you can find.

I believe you have that backwards. A 91 RON rating would be about an 87 (R+M)/2 in the US and Canada.

 

[ralph]

In any event, the users manual has specified a minimum octane rating of 90 using the (R+M)/2 method which we use in the US and Canada. No conversion is necessary.

 

[JustKip]

I believe you have that backwards. A 91 RON rating would be about an 87 (R+M)/2 in the US and Canada.

Yep. 'rithmatic backwards. 91 RON + 81 MON, divided by 2, is 86