what octane of gas do you guys use?

[[jh]]

I put the highest I can get at the station I fill up at, which I think is..............92. I always fill up at the same station, I feel that it helps perserve my beautiful  little vision poo. I put the highest in because it's the only bike I have and I don't have money to buy another one, plus it's just gotta help.

[zore]

So I'm riding home from work.  Doing my usual 65 mile road trip and decide to fill it up.  Now usually I fill it up with regular since she runs fine and doesn't ping but today... today I put super in.  I felt no difference at all, but with in only 5 short miles, the exhaust fell off.  I TELL YOU SUPER IS NO GOOD FOR THESE THINGS!

The funniest bit about the whole adventure was the fact that I've put 12000 miles on it or so since the end of 05 and other than a carb clean, a battery and a stater at 9k, it's been trouble free.  And those were the thoughts going thru my head when i heard the shame full bark of the rear cyl thru an unobstructed down pipe.

[kwells]

should go back to the gas station and demand they replace ur exhaust!

[Tanno]

....and tell them to specify the TNT additive next time. ::)

[Brian Moffet]

In 1994 (or right around there), at the Watsonville Airshow and Fly In, Chevron accidentally mixed jet fuel with aviation fuel.  Every plane that got fuel put in it at the air show was forced to get rebuilt by the FAA.  Basically jet fuel is around 50 octane, which will cause immediate knocking and pre-detonation.

Not a good thing.

Brian (that wass the last rebuild of my airplane engine...)

[ColinthePilot]

running higher octane than needed is a waste. In a given engine (say a 550cc V-Twin) upping the octane won't add more power. Higher compression motors need the higher octane. From what I can tell, the Vision doesn't.
However, 100 octane Aviation Gas is usually 100LL or "Low Lead." Would that be an issue in our V's since they don't have catalytic converters?

[h2olawyer]

The leaded fuel is an issue in vehicle with caatalytic converters.  The lead deposits eventually clog them up.  Saw one cut open once - not a pretty picture.  Many older engines had softer valve seats.  Unleaded fuel in those engines would cause damage to the seats.  Not a problem with the V engines.

When the Vision was released, unleaded fuels were still in use, but not yet fully mandated.  The fuel requirement listed on the emissions sticker inside the TCI cover recommends ninety something octane leaded fuel.

H₂O 

[Tanno]

91. I run the 91 because of that.

[Rick G]

I've been  running reg   since I first rode my Vision out the garage door in 1999 .  In MN., with there corn gas and in OR., with there damp atmosphere ,  and  here in Northern AZ at 3500 feet altitude and hot dry air . I've tried  all brands and types and cant tell any differance. 
The only differance  I noticed is when I go to Prescott  (as with  the CROV boys) and it runs like crap, but thats due to  the 6500 feet elevation  and not being jetted for it.