Tfw fell for Shell's nitro premium gasoline meme and now I can't fill my car up from 1/4 for $20 anymore

he didn't know the atmosphere is 80% nitrogen

He ran out of breath to finish his sentence. After all, he was using only the 80% of nitrogen to speak, so the last 20% of his sentence was unfinished.

>TFW regular unleaded is $1.99
>TFW Premium is $2.89 at the same pump
Arco Top Tier regular unleaded 87(USA) is $2.47
Arco Top Tier premium 91(USA) is $2.77 at same pump

My owner's manual says the car uses 87(usa) octane or better. I got rotten mileage at 87 but no knocking. But when I switched to 91 premium, my MPG rose a lot and now I might even be able to get close to that claimed EPA MPG. Damn car company advertises cars as using low octane but they actually want high octane if EPA MPG is to even be close.

The difference in price is small enough that it means I save money by using premium fuel instead of regular. Because the MPG gain is due to less retarding by the computer, I also can have my horsepower back.

I never realized until I read another Veeky Forums thread where someone talked about how their Malibu got lower mileage because the computer was doing anti-knock settings with 87 octane fuel.

First, water is heavier than gasoline, so it would sink to the bottom. Second, your tank draws from the bottom so it wouldn't have to run through all the gas. Third, in order for your engine to inject enough water to hydrolock your engine, you'd be injecting enough fuel to hydrolock it.

That said, water injection requires a separate system, you can't just pour it in your tank. Not just because of the separation issue, but also because it's displacing fuel and your ECU has no way to know to add more.

>Wtf are you complaining about, 87 is 3.09 and 91 is 3.49 here in commiefornia.
New Car (only 4K miles on it) gets 19MPG on 87. Switched to 91 and it now gets 23.X with the same driving. Don't know why it makes such a big difference but the car gets more MPG with a fuel that has less total energy in it. What a paradox.

It has pretty much the same amount of energy but as another user said the computer can do more shit with it without knocking.