[redneck]

Most fuel in a given area, comes from the same tank farm. When they pull up to the rack and load, it's generic. There isn't a bulk tank for every brand or filling station. If a company like BP's bulk tank goes empty before it can be refilled, they trade fuel with Shell. The differences are in the additives (snake oil) that they add. At my friends BP station, the fuel delivery man adds a large packet of additives "Invigorate" as he is filling the underground tank.

Just use the cheapest fuel you can find.

If you want top tier. Buy race gas.

The engine that I used for drag racing only had a 8.5 to 1 compression ratio and didn't therefore require higher octane fuel, 87 octane was fine. However, using 110 octane race fuel shaved several tenths off my time slip. It wasn't the octane rating that helped. It didn't need it and in fact makes it harder to ignite the fuel. It was the composition of the fuel itself and quality, that made the difference.

The only problem now is race gas is $8 - $10 a gallon. ($4 when I was using it)

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