Iwonder what all those people that mix their own fuel, and successfully fly with it, AND have longevidy with their engines, would say about that.

Brand name fuel is just that.. brand name fuel.I happen to use S&W from Pennsylvania.It's just fine and it's what the LHS has in stock. I've also used CoolPower which is what the other LHS has in stock.It's just fine. I've used the Tower brand, expensive to ship, but available.It's also just fine. If it's quality fuel, it doesn't matter who makes it.. even if it's made in the garage.

As far as breaking in your engine is concerned, if it runs ok, well,I guess you lucked out. Iusually run a tank or two, very rich, (Iwon't go through the break in procedure because that's in the manual), and then fly it. It runs better after each tank of fuel for the first 10 tanks or so. I only fly OSengines, by the way, from .46 to 1.60 with just about everything in between.. and they all run just fine. Can you break it in while flying it? Well,Dave says he does, and has never had a problem. I guess it comes down to personal choice. Since I was taught to break them in, I follow a modified procedure, but as I said, I do run a tank or two through it on the ground before flying it. I guess it comes down to a sanity check and more for the owner than the engine, but I am no expert on that subject.

CGr.