There was a guy on the old [email protected] listserv who worked for Sunoco. He said that most gas stations buy their base-stock locally. Transportation costs money, so they look for the closest vendor. They add ingredients to the base stock to achieve the desired octane rating. I'm not sure how much variance exists in what they use for additives, but it's probably mostly the same stuff.HurricaneFloyd said:I hear that Costco doesn't use fuel additives but they change the filters on the pumps frequently. Is this true?
Could not have said it better myself! Like I said earlier, costco meets minimum federal requirements! If you feel the minimum is okay with you then go right ahead and use it! Top tier standards are much more stringent and obviously not easy to obtain as even BP and several other big names have not qualified.glyphin said:Not all gas is created equal. Do some reading on "top tier gas" before misleading others.
After running Arco for a couple months my car starting pinging like crazy at low RPM's (I drive a manual v6). I had to run Techron to clear it up. Now I stick to the top tier brands (Chevron, Shell, 76 in my area).
Costco has explicitly said they only meet the minimum federal requirements. I used to run Costco since it was convenient and cheap, but now it's out of my way and after my latest experience with cheap gas I'd rather not gum up my engine and have to run a $10 bottle of fuel system cleaner every couple thousand miles. Plus, all those minutes waiting in line add up.
But we're talking about a 15 cent difference in pricing. So youre saying that the "top tier" gasoline companies are meeting much higher standards of federal regulations, and somehow doing it and only having to increase their price of gasoline 15 cents to the consumer? Which would equal out to probably 5 cent increase of actual "products" after you factor in their profit.VWTreads said:Could not have said it better myself! Like I said earlier, costco meets minimum federal requirements! If you feel the minimum is okay with you then go right ahead and use it! Top tier standards are much more stringent and obviously not easy to obtain as even BP and several other big names have not qualified.