I will add a suggestion, from a mechanic's point of view: if at all possible, use a Top Tier (TT) fuel. This is a detergent and additive package used by several companies which will help keep injectors cleaner and help minimize and (occasionally) reduce combustion chamber, valve, and piston deposits. It will say right on the pump if the gas is TT, or you can go to TT's website and see what's available near you.