Doing some research on gas. I have only run Ethanol-free 93 in the Dart, Compression is almost 11-1. However, one reason not much driving last year there is only one station 30 minutes away that has it. Is there that much difference in 90 ethanol-free vs 93 ethanol-free? The google is only giving me ethanol-free vs 93 regular fuel. I would assume anything ethanol-free is better than ethanol gas........................