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Mine did and I was to take my car in today for the recall.....

As I started the car my low tire pressure light came on, so no big deal I am headed to the dealer anyway and asked them to check it out ..

After the recall was done I was told that I had Nitrogen in my tires and they don't have it there so I was on my own ....

I informed them that I bought the car there... He checked the computer and said it was a dealer swap and that is why I got the Nitrogen.... All of a sudden they could check the tires for me....

A few minutes later the mechanic came in and gave me the key stating all the tires were at 27, probably caused by the sudden drop in temperature over night... Said he topped them off for me.

I asked why they didn't top them off in the first place if that was what was wrong....

I was told they were told they aren't allowed to mix air with Nitrogren to any cars except the ones bought there....

WTF???????????

So now i have mixed air and Nitro which I don't know anything about......

I am trying to decide if when I get new tires I should just switch over to air and forget about the Nitrogen as it seems to be a bit hard to find around here.......

Not to mention they will probably charge an arm and leg to fill new tires or top off.....

1. So did you car come with Nitrogen?

2. If it did are you going to keep the Nitrogen with the next set of tires??
 

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Mine came with Nitrogen. My understanding is if you have green valve stem caps you have Nitrogen. When I picked up my car, the sales guy mentioned something about, but also said that I could get it topped off with regular air if I was not near the dealer.

I did not do much research on the benefits of Nitrogen, but there definitely seems to be people who swear by it, and others who call it "snake oil."
 

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Mine came with Nitrogen and I had to add some air before going on a recent trip since the pressure was not consistent in all 4 tires according to my gauge. So I just added air from my compressor. I think all this nitrogen concern is not necessary since air is 80% nitrogen anyway. I look at it as just something else they may charge you for. I've been driving for half a century on air and have gotten along just fine.
 

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The effects of nitrogen are very benefitial.............................................to the ones who sell it.
 

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Mine came with regular air.
Nitrogen can be a hassle to find - I fill my tires in my garage, and that's a plus for me.
 

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First of all when the mechanic told you that your nitrogen filled tires were low due to a temp drop the night before sounds like BS.
One of the big selling points of nitrogen filled tires is that they are less effected by temp changes.
 

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QUOTE (Quigley21 @ Oct 4 2010, 02:00 PM) index.php?act=findpost&pid=360941
I was told they were told they aren't allowed to mix air with Nitrogren to any cars except the ones bought there
If you guys had paid attention to Chemistry 101 you'd know the air you breathe is 78% nitrogen. Enough said. Keep wasting your money :grin:. Pure nitrogen only makes sense on airplanes, when their tires can see 120ºF at one stop and 30ºF on the next. On a car the temperature variation is very gradual, and nitrogen or not, you still need to add air in winter due to decreasing temperatures. Plus tires still lose some air due to seepage regardless of fill gas, so having to go to a freaking dealer every time you're a psi or two low is ridiculous IMO. Have you wonder why your stupid dealer pushes so hard for crap like that? They're laughing all the way to the bank. I told the finance guy: 'Please skip all that crap and let me get out of here; I don't want any add-ons'.
 

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It's perfectly fine to mix air and nitrogen and any dealership should be able to add nitrogen to your tires if they're low on pressure for some reason, especially as new as our cars are at this point in the life cycle. Call them out if you ever get flak like that, especially if you're at the dealership you bought it from.
 

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i got the green caps and dealer said i got nitrogen air.

i coulda sworn i saw a thread about the benefits but it only would be for those driving a rediculously high amount of miles a year.
 

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If your a Costco member just pull your car up to the bay and ask them to top you off. Nitrogen is all they use + many dealers are going that way. My stems are green which means Nitrogen.
 

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Reg air for me. I like it that way. No need to pay $20-50 for something that doesn't gain me my money back. Second I use my home air compressor so I can adjust my tire pressure on the fly.
 

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how much psi do you guys keep it at? Any difference for nitrogen or air?
 

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I asked 1 of my lead sales people about '11 Sonata coming from factory with nitrogen.... never heard of it in any of his training or sales materials.

Why would automaker selectively fill tires with nitrogen ?

To the people with low air in your tires, inflate them with something and move on... nitrogen is for racing tires where heat will be big factor in inflation pressures as tires work at operating temps.


You want nitrogen, go to welding supply and take out a lease/rent a large 244CF bottle, likely last you a lifetime if you only used it for tires.
 

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If I recall correctly, the owners manual mentions the tires being filled with nitrogen, though I haven't noticed that my valve stems are green (actually, I think at least the very tips of them are white).

Here's the THEORY about nitrogen in tires. Keep in mind that the jury is still out! :) First, ALL tires lose pressure over time. Nitro filled tires will lose pressure a bit more slowly, which SHOULD increase the life of the tires. (Keep checking that pressure, folks!) However, if you're checking pressure regularly, this small difference (on the order of 2 psi lost for nitro vs. 3 for air) may not be worth the money.

Second, since you use nitrogen (actually about 94% Nitrogen), there is less water vapor (a normal component of air) in the tires. Water vapor changes pressure rapidly/drastically with temperature, so reducing water vapor should (theoretically) make your tire pressure more steady.

Take all that for what it's worth....
 

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QUOTE (eyecue @ Oct 8 2010, 11:11 AM) index.php?act=findpost&pid=362006
how much psi do you guys keep it at? Any difference for nitrogen or air?
33 PSI for my GLS, air or any other gaseous substance you choose to put in there. You should use the manufacturer's recommended tire air pressure as shown on the label in the driver's door well.

As previous posters mentioned, nitrogen is used in airplane tires and by auto racing teams for the same reason: near elimination of water vapor. It is just easier to use bottles of purified and 'dried' nitrogen that have very little to no water vapor than to purchase and maintain a compressor with a filter and drier.

The problem with water vapor in airplane tire fill air is that it will condense and then freeze at altitude into a tire unbalancing lump, ready to cause problems upon landing.
For racing tires, a situation similar to a pressure cooker arises as the tires heat up and the water vapor changes to steam, drastically increasing the pressure of the tires and the possibility of a blow out.

My theory about the "increased mileage" claim many nitrogen fillers make is that vehicle owners that are fanatical enough to pay for nitrogen filling are also very fastidious about checking the tire pressure and would get the same results from plain old pressurized air under a regular tire pressure checking schedule.

It is most likely your Sonata's tires will never see the extreme conditions experienced by airplane tires or be subjected to the temperatures of driving around the Daytona 500 course continuously at high speed. But there are no bragging rights to filling your tires with plain old compressed air like everyone else has for decades!
 
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