In todays EPA world in the US, the gasoline that is pumped throughout the country is the all the SAME. Once it gets to the terminal the retailer adds what ever is required to meet the specs for the gasoline required to be sold in that area, based on altitude, environmental regs etc. Different brands add what ever particular additional additive(so) it chooses to distinguish its brand.
mike hunt
From the Net, drip gasoline
>
>>is "white" gas that separates from raw oil. As the raw crude is being
>>pumped to a storage tank, every "X" amount of feet there is a separator
>>tank in the pipe where the "drip" gas is collected. It is very volatile
>>because it is, for all practical purposes, condensation from raw crude. I
>>have been told that it is this "white" or "drip" gas that is refined into
>>unleaded fuel. Many "pumpers" that watch over the pump jacks of Oklahoma's
>>oil fields, use this unrefined drip gas in their personal vehicles (which
>>is illegal)."
>
> It finds its way into your gasoline, particularly from "off brands." >
> The reason for this post is bring to your attention that there is no > single
> formula for motor fuel in the United States. This needs to be addressed.
> Gasoline varies by region, climate, season, refiner and seller! You do > not
> know WTF goes into your tank. No wonder when you floorboard that '70
> Trans-Am, it pings like you're running on the octane rating of cow piss.
> It's drip gas the culprit.
>
> The solution is entirely in the hands of the Federal Government. Aviation
> gasoline is made to a Federally approved formula. 80-87, for example, is
> the same in Los Angeles as in Miami, summer or winter, Chevron or Union > 76.
> No 80-87 aviation gas can be sold unless it strictly meets the Federal
> specification for it. That's the way your auto gas MUST be refined, to a
> uniform, strict formula. Then you will get uniform performance from any
> pump in the Country. Drip gas will be a footnote in history. And a side
> benefit, you will never, ever have fuel injector clogging again in your > lifetime.
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