has anyone use this oil for premixing?

 

There's a long on-going debate on whether synthetics are good for rotaries to burn. I wouldn't see any issue with it, seeing as it's 2 stroke oil.... you know, designed to be burned. Anyways, I just use TCW-3 2-stroke oil. I get it in gallon jugs. I've heard from many professionals that they THEMSELVES run Wal-Mart's "Supertech" tcw-3.

I don't think synthetic really offers any additional benefits for lubrication of the internals if it's getting burned off right away. Generally speaking, you use synthetics for their durability and long life. Not because it's the most expensive thing to set ablaze.