[Hugh R]

I used to use ARCO gas in my Mazda 626 and got consistently 19 mpg, I switched to Chevron and it consistenly went up to 21 mpg. I'm talking about 8 years of driving with ARCO and the last 2 years with Chevron, its my 10 y/o daily beater, driver.

So roughtly a 10% increase in MPG. If ARCO is not 10% less than Chevron, don't buy it. Also, ARCO now charges 45 cents ATM transaction fee, with a 10 gallon tank, that an additonal 4.5 cents/gallon that you have to factor in. BTW, ARCO gas is coincidently 10% ethanol, so what are you getting? Answer ... filler.