The Mirastar station next to Wal-mart in Marysville, Wa. has 92 octane for $1.63/gal. which is 10 cents cheaper than Shell, Chevron, etc. I was wondering where they get their gas from? I know to stay away from AM/PM & Citgo/7-Eleven and I generally use either Chevron, Shell or Union 76. Just wondering what the consensus was (if any).