From what I've read - the 1st gen's (99-02) only require 87 octane, but the 2g's ('03+) require 91/93 octane.
http://www.motorcycle.com/mo/mcnuts/rt-fuel1.html
This was a good artice I found on fuel.
http://www.motorcycle.com/mo/mcnuts/rt-fuel1.html
This was a good artice I found on fuel.