I use Shell Vpower premium and then I chuck in some Husky 94 stuff every once in a while.
Is the PetroCan gas Top Tier, I am not sure?
Never, never use Safeway gas, anyone. Damaged my dads car, fouled the plugs. they sell gas that may may meet spec but it is shit gas. Use it for fire starter only. I wouldn't put it in my lawnmower