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Old 28 October 2007, 03:35 PM
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I work at an auto dealer. The owner of my company wanted to test Nitro Fill. We filled two of his tires with Nitro and the other two with normal compressed air. After 6 months there was no appreciable difference inthe pressure loss. We checked the pressures once a month and did our best to keep this as a real world experiment. Nascar, the airline industry and NASA all make use of nitrogen in their tires mainly due to the fact that pure nitorgen has a more predictable expansion and contraction rate which is helpful for aircraft and spacecraft which handle extreme temperature and pressure changes due to altitude changes. Nascar uses it since their tires handle massive pressure and temp changes due to the very high speeds they travel.

Just my two cents worth....
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