What is the best gas to run with G Coupe? I mean obviously those with the high octane levels but which to be exact? I know it's all based on prefferance but I'm trying to get a better feel for wut I should put in my car. I know not to use any of that cheap stuff. I always use Shell mainly and occasionally Mobile. Shell has worked pretty good for me but I also heard they aren't any good. I also heard Sunoco is pretty good too. Which have u noticed gives the best performance?

 

stay with a top tier gas and you'll be fine.

http://www.toptiergas.com/retailers.html