I run premium 92 or higher in mine. I will admit I had to run lower octane for a month when gas was in short supply here in the south. Did not notice any difference but wouldn't won't to run it all the time.

 

I always use premium 92 in my 08. That is what it likes and that is what I will always use.

 

Unleaded? We all use unleaded since 1994 or so. How about "Grade" or "Octane"?

My manual for an '06 Custom 1200 says run 91 octane minimum (I think, don't trust my memory). So I run the premium stuff. Incidental cost is not an issue.

 

kahaone:

I could be wrong, but most octane booster is just some kind of alcohol in a fancy painted can that the marketers thought would sell well. With most gas being 10% alcohol, we already get enough of that.

I really don't think you are getting anything out of that snake oil above buying premium grade gas, except more confidence.

I don't have any studies or references to be of any help, just an unscientific opinion. And besides, bike and car manufactuers don't design their engines and fuel systems around that stuff. It could even be harmful to seals or carbs or what not. Some Harley manuals suggest limiting alcohol to 10%.

btw, I used to buy octane boost for a '70 high compression engine MGB GT in the mid '80's and then it really did help as the manual (and engine) called for high octane, leaded gas. I thought that car was cool then, but our bikes are way cooler now!!!

My .02.

 

Unleaded??? That for girls. I run diesel in my sporty.