There’s actually a really good explanation for this.
This is a mixing pump. It mixes ethanol into the fuel. Because the mixing happens before the part of the pump that measures how much is being dispensed, you need at least a few gallons to fully flush things out and get somewhere close to what you’re actually buying.
Nobody is going to come arrest you if you buy 2 gallons of gas. But the gas you get me not be the mix you wanted.
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archaic and inflexible.
No, it’s working precisely as intended. There are so many layers of byzantine laws and ordinances in the US on multiple levels – federal, state, county, municipal – that anyone who really wants to is guaranteed to be able to find something to harass and/or arrest you for, no matter what. Probable cause can be rendered meaningless by making a humongous array of trivial things technically illegal.
Does your window tint meet the specific requirements for this county? Is your stereo 0.01dB louder than our municipal maximum? Are your license plate and registration sticker acceptably clean? Do your tires have the correct tread depth? Do you have a radar detector installed? Do you have an air freshener hanging from your rearview? Are you carrying your written prescription around with your pills? Is your pocketknife blade too long? Do your cigarettes have the wrong state’s tax stamp on them? Did you remember to sign the back of your registration card? Whoopsie doodle, this state passed a law mandating minimum headlight height from the road, too bad your car left the factory out of compliance. Could you step out of the vehicle for me, sir?
Etc., etc., etc.
While I see your point, given the devastating effects leaded gasoline has had on entire generations, perhaps fuel is a good thing to regulate.
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Found it. Since the gas goes through the same hose as the other blends, if you’re buying gas you need to get at least 4 gallons so the previous gas flushes out what was left in the hose from the previous sale, and fills enough of the container that the blend is primarily what you selected.
If you buy E15 and fill your tanks, then the next guy buys E10 and only gets 1 gallon, they might end up with a higher ethanol mix than intended, and if they use that on a small motor, like a chainsaw, it could ruin the seals.
I’m in Europe and I have never in my life seen a gas station that dispenses every fuel through just one hose.
Every fuel has its own hose and “pistol”. Each “pump” has two or three or four hoses.
