Premium octane - 91, 93, ???

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Jun 1, 2007 | 08:36 PM

#21

Drat

Road Warrior

Joined: May 2007

Posts: 1,951

Likes: 33

From: Upstate NY

RE: Premium octane - 91, 93, ???

I run 93, either Sunoco or Mobil. I have not tried any 91 yet. Northern NY 93 $3.47 today.

Jun 1, 2007 | 09:01 PM

#22

woosh

Outstanding HDF Member

Joined: Aug 2006

Posts: 3,085

Likes: 1

From: Minnesota

RE: Premium octane - 91, 93, ???

Quote:

ORIGINAL: 1FLTRI4ME

91 is the highest grade out here,bike runs fine.

Same here.

Jun 4, 2007 | 10:41 AM

#23

cadman311

Club Member

Joined: Feb 2007

Posts: 4,892

Likes: 2

From: DUNDALK,MARYLAND

RE: Premium octane - 91, 93, ???

I saw this, I just had to try it. I did 4 tanks full of 89 octane on the weed end. The only thing that was different was the back fireing was less thenI like. It ran just as fast and hard as the bike would take. I might try it a little long. It is still running good.

Jun 4, 2007 | 01:09 PM

#24

aquaskiman

Tourer

Joined: Mar 2006

Posts: 405

Likes: 0

From:

RE: Premium octane - 91, 93, ???

What octane does is slow sown the burn rate of the fuel. The reason to run octane, is to stop the fuel from igniting to soon. Higher elevations require less octane than lower elevations. Less air = less compression=less heat=lower cyl temps= less pre ignition. The higher compression the more octane needed.
George