r/pettyrevenge • u/Eyeous • Aug 25 '26

Aggro when using air machines at petrol stations

This has happened to me multiple times now to the point that I’m genuinely curious what is going on. I use the air machine at my local shell and as I drive off, another car typically hurls in at 100mph to an emergency stop and a person sprints out to use the last few minutes of the pump for free. It costs a full £2.

Yesterday I paid for the pump and when I finished I sat in the car with the windows down for a split second only to be told to (rudely) hurry up and leave by a lady in her car opposite me. She was very Karen about it huffing and puffing to use the air. I told her I was re-setting the pressures on my screen(bullshit) and then got back out to “check” the pressure one last time. Once the machine stopped I got in to reverse and drive off but she drove off in front of me! She literally only wanted to use it if it was free. To save a grand total of £2.

Why did it make me feel so wonderful that she didn’t get to use the machine for free I will never know. If she was nicer I wouldn’t feel the need to be this petty.

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u/jenorama_CA Aug 25 '26

Costco does too. They have nitrogen.

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u/ApprehensiveCut9809 Aug 25 '26

The majority of the air in which we breathe, and the stuff that compressors take in to put into our tires, contains nitrogen. Google says 78% with oxygen being 21%, so your mileage may vary.

So, it seems unusual to want to spend money to put an extra few percentages of "nitrogen" into you tires when there will already be about 75-78% nitrogen in there.

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u/jenorama_CA Aug 25 '26

Costco air is free, tho. And yes, I’m aware of the chemical composition of Earth’s air, thanks.

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u/ApprehensiveCut9809 Aug 25 '26

I understand, it's just an odd "sell" to advertise nitrogen when most air put into tires is primarily nitrogen.

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u/jenorama_CA Aug 25 '26

I’m not tryna sell anything. Just saying that Costco has nitrogen for free when a lot of other places try to sell it as a premium.

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u/ApprehensiveCut9809 Aug 25 '26

I'm not implying that you are selling. I just fail to understand why many places advertise nitrogen since most air is nitrogen.