I know guys that have run their engines on Amsoil for years at the 100:1 ratio. I have never heard anything negative about it until now. These same guys turned me onto Amsoil several years back and I've been running my G23 on it since. One thing I must add. I, myself, do not take the chance on the 100:1 mixture. I've always mixed mine between 75:1 to 80:1. I've been running this mixture for a few years now and have never had any problems. It's hard for me to believe that anything can run on a 100:1 mixture, regardless of what kind of oil it is, but there are guys that do it all the time without any problems at all. Sounds to me like a few people may have a pretty lean needle setting.

John