Agreed, nothing wrong with sticking to 40:1. In fact since I buy my oil in quart sizes I have actually gone to using 3 oz per gallon. I have a ton of 3 oz mixing cups so I just fill one of those and dump it into the gas can. Everyone has their favorite oil, I have used at least 6 different brands and didn't really notice any difference. Before it hit the dirt I had a DA 150 that had over 2,000 runs on it and was still running great. I currently have a 3W 70 twin with unknown use on it that does very well on the same mix.