[GZBrian]

Hello Ziggy. I switched on and off from Marathon gas and then tried Shell V power. The bike seems to run better on Shell V power, so I have stayed with it for almost 3/4 of a year. Like others say, the GZ can run on about anything, so I don't think there is a right or wrong answer. I like the way the bike has been running with the V power so that is what I stick with. I also put in some Seafoam every 3rd or 4th tank full. I have had no problems with the fuel. The Marathon gas I used was the regular grade, mid grade and the higher grade. The GZ seemed to run the same on all of those grades. When I tried the V power, after 2 tanks the bike just seemd to idle, and run much smoother. That is what I use. Hope it helps. GZBrian