There are a couple of "reasons" that mechanics tell you to put N in there.

1. It's a dry gas, so the wheels don't rust. I don't know about, but that's never been an issue with any vehicle I'v ever owned.

2. The molecule is bigger than an oxygen molecule. In theory, that means you'll lose fewer molecules through the rubber, and the pressure will be accurate longer. Consumer reports tested that theory. Turns out it's bunk.

3. The profit margin is huge. During your google search, did you happen to read the ads for the commercial machines?

The one big advantage to N is that it's very stable as the temps change. On the track, that's very important. On the street, not so much.

 

I'm not particularly surprised to see an "improvement" of 10% or so being claimed. Maybe it exists relative to the immediately previous driving. Just don't be too hasty in calling out where it came from.

Frequently, and especially where fuel consumption practices are concerned, people subconsciously drive somewhat differently in order to maximize the mpg change - and then assign the entire benefit to whatever new is being tried. It's human nature to try to put one's own choices in the most favorable light possible, and it's easy to not recognize that this is happening. In this specific case, any improvement at all is clouded by not knowing the before and after tire inflation pressures and whether any other work was performed at the same time that would have separate effect.

Meanwhile,the following Google search will turn up where this topic has been discussed right here on MustangForums, and I'm pretty sure that I've contributed to at least two of these previous discussions:

nitrogen site:www.mustangforums.com

Or maybe this will get you there directly:

http://www.google.com/search?q=nitro...e7&rlz=1I7DKUS


Norm

 

Well said as usual Norm. Our shop has decided not to take people money and will continue to use the good ole air we breath.

 

I am running nitrogen in my tires, and the only reason i am is because we had to design a nitrogen tire filling system at work because my boss didnt want to spend 10000$ on the generators that some companies offer, so my car ended up the test vehicle. The tool we built works pretty good, pulls vacuum and refills from a nitrogen cylinder from airliquide. Pretty kickass consierding we built it for less than 50$. ANYWAYS... I didnt really notice any fuel economy difference at all. I still think this is snake oil....

 

If it pulled any large amounts of vacuum required to purge the tire/rim assembly of the residual air, it would unseat the bead(s). You must not be pulling 25-30"s of vacuum as would be required to evacuate all the common air from the tire/rim.

 

You're right it doesnt pull the amount of vacuum that a 2 stage vacuum pump on a a/c machine would. It pulls around 15-20" depending on the tire, so no we dont evacuate all the air, but it does pull as much as a commercial machine that claim to inflate 97ish% with nitrogen

 

Im not sure on how much vacuum it would take to pull a bead from a tire, but Id be willing to bet it would be a hellouva lot.

 

edit : Nevermind, mods took care of it. They should have deleted my post too, lol. Since it made no sense with the spammers post gone.

 

With respect to an administratively removed post,

Exhaust sound has nothing to do with this thread. Please attempt to stay on topic.

Edit: reported (and I know the moderating team was already aware of this activity)


Norm