So long as you use Top-Tier gas, your car will be well fed. To learn about Top-Tier gas go here: Top Tier Gasoline
I personally use Shell. Their 91 octane pump fuel contains the most detergents (V*Power) of any gas sold in the US. I also use it because I'm a huge Ferrari Formula 1 fan, and Shell produces all the fuel and lubricants for the team. The F1 technology allegedly trickles down to their consumer products.
chevron and last fill up I was at 16.64 mpg all in town driving (8 stop lights in 8 miles to work, 12 stoplights in a 4 mile round trip on my bank runs to and from store I work at, and then back to house after work) RT classic 6m