I don't "tout" myself as being a mechanic. It's in my user name....BIG DEAL. lol I am a mechanic at a shop and I love my work. And guess what! I now understand mix ratios. And since your such a perfection freak I'll explain why I didn't understand in the first place! At the shop we run 50:1 in EVERYTHING. That's it. All I needed to know was to put a 2.6 bottle of mix in a 1 gallon can and I was good to go. If my boss wanted me to know other ratios he would have told me, and If I thought I needed to, I would have done the research. Not all mechanics know Everything. I bet I know alot of things that you don't...and should I start downing you because of it? Here's something, and Don't look it up! Right down for me the Quadratic formula. You should have learned this in Algebra 2.