Join Date: Jun 2004
Location: Athens, GA, USA
Followed the advice in my manual and used nothing but premium grade gas (93 octane US/GA) for the first 18 months on my 03 GT. But a couple of months ago, after reviewing a lot of old posts on the old site, I dropped down a grade (89 octance). Seemed to run okay...no knocking or pinging unless I really was in the wrong range.
HOWEVER, overall performance seemed to slow and gas mileage started to dropped. So after about 1500 miles on the lower grade, I threw in a tank of premium at my baby was BACK to monster status. It was night and day. Obviously, I had gotten used to the slight hesitation and slow pick up with the bad stuff.
Hate to pay the higher price, but it's nothing but the good stuff after this.
2003 K1200GT (Blue...of course!)
I may not have gone where I intended to go, but I think I have ended up where I intended to be.
-- Douglas Adams