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Post deleted by Defbob #29102
08/01/06 04:23 PM
08/01/06 04:23 PM

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Re: Nitrogen filled tires increase mileage ? #29103
08/01/06 04:27 PM
08/01/06 04:27 PM
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Corpus Christi, TX
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I wonder if Helium would yield abother 1mpg over that?




Here is the deal, Nitrogen makes up 85% of our atmosphere, the air compressor that is used to fill tires up, is compressing 85% nitrogen as it is, that news channel is full of it. There was a thread on this a while back


The Federal Government has not yet learned that you cannot legislate morality 1970 Coronet R/T FF4/FF8/V85/V1G 440/Auto/3.23 1970 Coronet R/T FK5/FK5/V8W/V1W 440/Auto/3.55 1970 Super Bee TX9/TX9/V8W/N96 383/Auto/3.91 1975 Duster 360 VS29L5 Daily Driver
Re: Nitrogen filled tires increase mileage ? [Re: shanker] #29104
08/01/06 04:41 PM
08/01/06 04:41 PM
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Olympia, Washington
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I think Nitrogen is just more stable than normal air in your tire, it won't change pressure as much with the temperature outside. As long as you keep an eye on your pressures you won't see any difference, but if you never check it then it is probably a good idea.


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Re: Nitrogen filled tires increase mileage ? [Re: tallzag] #29105
08/01/06 04:56 PM
08/01/06 04:56 PM
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Santa Rosa, NOR*CAL.
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I tried pouring that there "Nitrogen" stuff into my tires once...My wheels just cracked off the car.

Re: Nitrogen filled tires increase mileage ? [Re: tallzag] #29106
08/01/06 05:13 PM
08/01/06 05:13 PM
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Quote:

I think Nitrogen is just more stable than normal air in your tire, it won't change pressure as much with the temperature outside. As long as you keep an eye on your pressures you won't see any difference, but if you never check it then it is probably a good idea.




Bingo. It's just more stable as temperature changes, that's why turbine aircraft use it in tires, pretty much exclusively. I have a friend who is an HVAC guy, and years ago, he had a tire leaking pretty bad on his service van, and he's stranded in the middle of nowhere. So he gets the bright idea to put some R12 in the tire to get him to a tire shop. It worked for a minute, but after a mile or so, the R-12 heated up and the pressure went to the moon, and so did the tire sidewall. BAM! NOT a good roadside fix.

Re: Nitrogen filled tires increase mileage ? [Re: Dick H.] #29107
08/01/06 05:39 PM
08/01/06 05:39 PM
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Warren, MI
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nitrogen is used primarily because it is stable. tanks of nitrogen are 99% pure and therefore can resist changes in extreme temperature conditions. cars that run over 150 MPH and have wide tires and lots of side load generate alot of heat and therefore can go to extreme temps from standing still to running. most passenger cars although change temps will not undergo the extreme change required to make this effective. i agree, check your tire pressures every now and again and adjust accordingly.


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Re: Nitrogen filled tires increase mileage ? [Re: Jerry] #29108
08/01/06 05:56 PM
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So Cal
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Another advantage of filling a tire with Nitrogen is that the itsmolecules are thicker and bigger than air..
So if the tire has a slow leak it takes considerably longer for the tire to deflate.......

Re: Nitrogen filled tires increase mileage ? #29109
08/01/06 08:19 PM
08/01/06 08:19 PM
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Kelowna, B.C. Canada
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Quote:

Local news article claimed 1-1.5 mpg improvement. Anyone here tried it ?




Nope. not that gullible.

Dave


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Re: Nitrogen filled tires increase mileage ? #29110
08/01/06 08:31 PM
08/01/06 08:31 PM
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St. Charles, MO
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Quote:

Local news article claimed 1-1.5 mpg improvement. Anyone here tried it ?




No, but I do religiously change the air in my tires every 3,000 miles.


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Post deleted by Defbob [Re: wingman] #29111
08/01/06 08:37 PM
08/01/06 08:37 PM

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Re: Nitrogen filled tires increase mileage ? #29112
08/01/06 08:42 PM
08/01/06 08:42 PM
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St. Charles, MO
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Quote:

Quote:

Quote:

Local news article claimed 1-1.5 mpg improvement. Anyone here tried it ?




No, but I do religiously change the air in my tires every 3,000 miles.




do you use NOS air or reproduction ?




Reproduction. I pulled the original air out of the tires and store it in baloons in my garage. It's too valuable to use every day! I put it back in sometime for shows though--you know how those judges can be.


1969 Dodge Coronet Super Bee 383 A4
1970 Plymouth Road Runner 440 FC7 (sold)
Re: Nitrogen filled tires increase mileage ? #29113
08/01/06 08:43 PM
08/01/06 08:43 PM
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I use recycled.


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Re: Nitrogen filled tires increase mileage ? #29114
08/01/06 09:30 PM
08/01/06 09:30 PM
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Clinton, NJ
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From what I hear from the old timers, Mercedes-Benz was going to do this in the late 70s or early 80s. I think they did some testing, but then realized that it was not practical once the car was in the customers hands.

Post deleted by moparts #29115
08/01/06 09:41 PM
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Re: Nitrogen filled tires increase mileage ? #29116
08/01/06 10:04 PM
08/01/06 10:04 PM
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Piqua, Ohio
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What it really comes down to is that the large majority of drivers on the road today just do not check the maintenance on their cars regularly. They don't check air pressures, fluid levels, lights, ect. This nitrogen is just another way to make a lazy people even lazier. Just look at the other cars on the road when you are out driving and see how many cars and trucks have visibly low tires. When they come out with an oil that leaks out slower than the current oil so you only havee to check it once a year, I'm going to hang up my wrenches.

Re: Nitrogen filled tires increase mileage ? [Re: dodgeram440] #29117
08/01/06 11:30 PM
08/01/06 11:30 PM
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Weatherford, Texas
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Actually I've heard that' it's petty handy in drag slicks...keeps you from having to chase tire pressure all day...especially if you are running all day and into the night...for us little guys it would probably be the PIA factor that would keep us from trying it...having to keep a nitrogen bottle as part of your track equipment...keep it filled...use a storage tank instead of a regular air compressor...might be just too much trouble...


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Re: Nitrogen filled tires increase mileage ? [Re: RapidusMaximus] #29118
08/02/06 12:24 AM
08/02/06 12:24 AM
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Fancy Farm Ky
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Nitrogen an Oxygen the two biggest components in air actually have about exactly the same specific heat ratio, so the heat pressure deal doesn't really fly, you get rid of the O2 you do get rid of the corosion factor of O2, but not many tires corode, without any O2, I guess you would also have a safer tire, no O2 to support combustion, as long as it's in the tire. I work in the natural gas biz, I've seen that used in a pinch out in the field, but it's allways best to warn the guy fixing that tire. LOL

Re: Nitrogen filled tires increase mileage ? [Re: wyoming] #29119
08/02/06 08:51 AM
08/02/06 08:51 AM
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East Aurora (Buffalo) NY
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N2 and air are, for all intensive purposes, the same. That is, any heat expansion air has, the N2 will have too. But what N2 doesn't have is moisture and CO2 which do vary vapor pressure greatly with temperature fluctuations a tire will be exposed to. Also, as stated, there is no O2 to contribute to corrosion (or moisture) and the lack of O2 will prevent the rubber from braking down on the inside. For the money these guys are charging for N2 though, man, thats a racquet. I work in the air seperation industry and know what it takes to generate N2.


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Re: Nitrogen filled tires increase mileage ? [Re: RoadRunner] #29120
08/02/06 08:59 AM
08/02/06 08:59 AM

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I understand that some places offer a free "tornado" with the nitrogen replacement to give you an even better mileage increase!

Re: Nitrogen filled tires increase mileage ? #29121
08/02/06 09:19 AM
08/02/06 09:19 AM
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Ansonia, CT
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If regular air expands more with heat than straight N2 then you would think that you get better mileage with regular air as the pressure builds and rolling resistance goes down.


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