Originally Posted by DBH
Not quite right.
I worked for a gasoline wholesaler in Northern NJ. We'd buy generic blend gas from the refineries. Gasoline is a commodity that is refined all over the world. Delivered price determined where we bought it from. In many cases it came from Europe although not so much now - remember, price. Not much if any additives from the refineries - these are expensive. Each "name brand" would load up their tank truck and then pour in their own additives package. Some of the brand "X" trucks would put little or NO additives.
So...you are better off buying a top tier brand and 93 octane if you can get it.
But it is required by law to have an x amount of additives for the engines.