There you go. If it's good enough for one of the best chain saws made it's fine for our engines.

One thing people don't take into account is how the oil reacts with the gas over time. I have a Husquavarna brush cutter with last years gas/Husky oil mix in it and it started right up and ran fine whereas if you use some of the fancy full synthetic oils the gas seems to go "bad" faster. Some guys won't use fuel in their models if it's over a month old.