dont be cheap, your engine has over 12:1 compression so your gonna have to go 93 and up everytime..... Come on now:2bitchsla

 

Over here in cali 91 is highest. So i'd go with highest you have access too.

 

Go with what Yamaha says. If you go higher then you are required, you are burning a harder to ignight fuel, and therefore actually losing power.

 

Go with what Yamaha says. If you go higher then you are required, you are burning a harder to ignight fuel, and therefore actually losing power.

yepp...thats true....

yamaha said our R1 need 95 octane (RON)........RON is used at several country like Europe, Asia..etc.....

but someone told me that US use MON.....MON is lower number than RON...
i mean, 95 (RON) is same with 91 (MON).....
but several time i notice....if i use 92 RON....it accelerate faster....but thats my opinion...

 

93 and 94 here ... have ran 87 because i was low on flow .. but wouldnt it cause it to fire earlier and possibly cause detonation?

 

Lots of bad info on this thread...

Use whatever your bike runs best with - period!

Ron is a higher rating than MON but in the US we us r/m...

a 95 ron is 92 r/m or 89 mon...

My bike is 13.1 c/r and loves 93 and when it was 11.1 c/r it really liked 87 but hated 93...

 

All that plus if your ambient temp drops your bike will run better on a lower octane. My rule of thumb is 1 ponit down every 5 degrees celsius.

 

You could start with a search...but you'll find the same answers.


Been running 89 for ages now and no issues. Octane does one thing...resists pinging...the higher the number. You run the lowest octane that engine will take without pinging. Mine pings on 87...89 is actually cheaper for me anyhow, and I get the best gas mileage. Sooo...that's where it stands. If the bike is goign to be on the track and under significant load...up it to 91.

 

Lots of bad info on this thread...

Use whatever your bike runs best with - period!

Ron is a higher rating than MON but in the US we us r/m...

a 95 ron is 92 r/m or 89 mon...

My bike is 13.1 c/r and loves 93 and when it was 11.1 c/r it really liked 87 but hated 93...

 

I use 93, and 94 here. It is stupid to use anything under 90. If you do, you will find out very quick what I am talking about.

 

call mythbusters!!:lol

 

I use 93, and 94 here. It is stupid to use anything under 90. If you do, you will find out very quick what I am talking about.

Define quick?

5...6 years of riding...150k miles?
:dunno

 

call mythbusters!!:lol

Ah man, nice one Porn. :lol :lol :lol Actually, that would be a good segment for them to air a story about. I would stick with at least 91 octane; although, I have ran 89 with no problems on occasion.

 

The guys flying Ultralights using the Rotax motors say Shell and BP have the best quality fuel, at least in South Florida

 

No wonder........ While filling up the tank on my 03 today, I figured I could be a tightwad so I filled er' up with 87. $10.00 worth. I now notice the engine with an erratic acceleration on first gear. Almost like it's bogging. I can't notice it on any of the other gears since the bike is moving too fast. But on first gear between 0-15 mph I really do feel a difference. For the record this is the first time I have ever put 87 in my bike since I bought it new and WILL BE THE LAST.