Shell's Nitrogen Enhanced Gasoline.
 

https://reviews.cnet.com/8301-13746_7-10185640-48.html

Cliff Notes: Shell is using Nitrogen as an additive to their gasoline to keep the engine clean.

Does it work... Maybe. But more importantly, What does this do for Fuel Economy?

We'll all be able to find out soon enough. I'll try to get a baseline once the weather stabilizes this summer and then switch from Cumberland Farms to Shell if nobody reports on it by then.

got a Shell gas card, so i'll find out as well.

That article didn't say anything about it's effects on fuel economy, so I wonder?? You would think that if it improved fuel economy it would have been mentioned. Also, there is plenty of nitrogen in the air so our engines will really get an overdose now if it is also in the gas. I am not being negative, just thinking out loud here.

There are no Shell stations in Upstate NY anyway that I know of so I can't even try it just to see what it does.

I guess the question is, what is it replacing? Also, how is it kept in the gasoline, being that nitrogen is gaseous unless you compress the hell out of it or crank the temperature down really really low.

just filled up my wife's camaro and nothing was advertised as such yet. also would like to know if the v power(93 octane) is the only grade with nitrogen.

hmmmm...

That was my first thought. I'd say they might do it like carbonated beverages but the act of pumping would make you lose most of it... Must be chemically stored like the nitrogen in airbags.

It's the complete opposite here. All the Shells have big vinyl banners advertising it.

Also it is a great point made that if it does improve FE then they would of course want to mention it. So it doesn't seem too promising from a FE perspective.

Ok so they put more cleaners in the gasoline to keep their dirty gas from fouling our engines . . . humm fertilizer is nitrogen rich . . . bunch of chicken ship!

I don't know what stations you have up there, but Shell gasoline is also sold under the Quarles name as well.

-Jay