[los211]

I have always used the cheapest lowest grade fuel I can find and have never had any issues with engine performance. I also have run higher octane fuels with no noticable gain in performance or mileage. My wifes cousin swears his car gained 5-10 horsepower buy going with 91 octane in a pontiac grand am with a 4 cylinder. I am a mechanic and refuse to even acknowlegde that type of statement. Also in California fuel only comes from a few refineries instate and does not import fuel from other states. We have to pay more for the special California only gas. That being said each tank farm that supplies ALL of the states gas stations adds the required additives to the fuel just before they load the tanker or during the loading process. So in California anyway the gas comes from the same place and the only difference is the additive for a particular "brand" and the different octane ratings. Plain and simple that is just my .02 cents.