A while back I had heard that Chevron gasoline did not contain 10% ethanol like most others. Is that a wive's tale? I tried to buy it on the theory that car would run better/get better mileage/etc...
So Sammy, (or any other fuel experts), is there any real difference in the major brands in CA. these days? I put in Shell last week and could swear that my car ran better. (91 octane, stock 996). I let it run dry before fueling, so each tank is fairly pure of one brand. Anyone know? TIA.
