Green valave stem caps ?

A guy at work has green valve stem caps on his truck tires.

Does that mean he fell for that BS about it being better to put nitrogen in your tires ? :haha:

Nitrogen is BS?

Nitrogen is BS?

Yes, BS as far as it giving you better gas mileage.

It might mean you don't have to add air to you tires as often, but that's about it. Doesn't seem worth the hassle of going some place out of the way just to get only nitrogen in the tires.

Yes, BS as far as it giving you better gas mileage.

It might mean you don't have to add air to you tires as often, but that's about it. Doesn't seem worth the hassle of going some place out of the way just to get only nitrogen in the tires.

If you put relatively few miles on your car, you can benefit most.
The less air will be lost, and the more likely there will be less moisture in the tire helping the tire to last longer, and the readings more consistent.
Overall, not a big plus for most drivers IMO.

Yes, BS as far as it giving you better gas mileage.

It might mean you don't have to add air to you tires as often, but that's about it. Doesn't seem worth the hassle of going some place out of the way just to get only nitrogen in the tires.
So what you saying is it isn't BS. At least we cleared that up.

Depends on what sales pitch caused him to buy 22% nitrogen (78% is free).

If he fell for the 10 MPG and 100000 miles on the tires routine, then, YES, it is BS.

If he got it because it was thrown in with the deal and it may give him 1% better gas mileage or tire life, then. NO, it isnt BS.

Does anyone have any evidence that nitrogen actually doesn't lose pressure slower than regular air? Sure if you have the good habit of checking your air pressure on a regular basis nitrogen is of little/no benefit to you. How many people do this however? For them nitrogen is a way they can continue to not monitor their tire pressure but keep proper tire inflation for longer periods of time.

Does anyone have any evidence that nitrogen actually doesn't lose pressure slower than regular air? Sure if you have the good habit of checking your air pressure on a regular basis nitrogen is of little/no benefit to you. How many people do this however? For them nitrogen is a way they can continue to not monitor their tire pressure but keep proper tire inflation for longer periods of time.

http://www.getnitrogen.org/pdf/graham.pdf

Again, the differences are not huge. But they are what they are.
Regardless, when it comes to preventative maintenance, some folks are more diligent than others, regardless of what is in their tires. But for someone who does not check as often, or leaves their car parked in the garage for longer stretches, they may see some advantage with N2.

So what you saying is it isn't BS. At least we cleared that up.

You must have trouble reading.

I clearly posted Yes, BS as far as it giving you better gas mileage.

You must have trouble reading.

I clearly posted Yes, BS as far as it giving you better gas mileage. So you are saying that properly inflated tires have no bearing on gas mileage? Everyone out there is right on top of their air pressure? You debunked yourself with this statement:
It might mean you don't have to add air to you tires as often, but that's about it.

Do you have anything else to add?

Meh as long as it doesn't cost any extra I don't think its bs.

Meh as long as it doesn't cost any extra I don't think its bs.

According to the "getnitrogen.org" website, the average depending on area is $3-10 per tire. Remember, air is free. Many gas stations still have free air or maybe you have to pay $0.25 to turn the pump on.

Realistically, so long as you maintain your tire pressure, there will be 0 benefit in gas mileage. Nothing. Nada. The reason is because you are still going to have to monitor your tire pressure with Nitrogen vs air. So long as you are going to assume that you are maintaining your pressue with nitrogen, the same should be said for air. Therefore, you should have proper air pressure and therefore no difference in MPG between air and Nitrogen.

The real benefit to nitrogen vs air is that nitrogen is hydrophobic and less corrosive. Nitrogen gas cannot carry moisture. Oxygen can. Removing oxygen can help reduce the amount of moisture in the tire which can reduce the corrosion of the metals. Nitrogen also does not oxidize the rubber compounds of the tires and so it can increase the life of the tire itself. BUT, tread wear is not going to be affected by nitrogen unless you are going to assume proper inflation, but you have to assume both if you are going to assume one. Unless you intend to re-tread all your tires. You will run out of tread on a tire long before you will ever reach the life expectancy of the rubber.

In reality, nitrogen is a wash at best. For the majority of the public, it will be irrelevant in the long run to use either nitrogen or free air so long as you maintain the proper inflation, which has a much larger affect. Since nitrogen makes up 78-79% of the aire we breath, only that 21-22% is even affected by the "nitrogen leaks slower" argument. In truth, nitrogen filled tires should maintain pressure about 40% longer than air filled. But remember, if you re-fill with nitrogen, you'll pay more.

You best option, if possible, is to find somebody who has a good industrial air compressor system. They will have plenty of dryers on the system to keep the moisture out. Tire places should have a decent system and if you buy the tires from them, they will likely be more than willing to check and "top off" your air. Heck, get it done every time you change your oil. Whatever. It's free.