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If You See a Green Cap on Your Tire Valve, It Means Nitrogen Gas


The use of nitrogen gas for inflating tires, though trending, is not new and has been mandated for aircraft tires since the 1980s. It offers benefits such as reduced moisture buildup, more stable tire pressure, and less pressure loss over time. However, it comes with drawbacks like higher cost and limited availability compared to regular air-filled tires. Those are cheaper and widely accessible despite potential issues with pressure fluctuations and moisture.

Deciding between nitrogen and regular air depends on factors like driving conditions and personal preference. For most everyday drivers, regular air is sufficient. But nitrogen may be beneficial for those seeking more consistent tire pressure and potentially longer tire life with reduced maintenance. Experts suggest using a good tire pressure gauge regularly regardless of the inflation type.

Nitrogen gas refills cost between $5 to $10 per tire on average, with some places offering unlimited refills for a single payment. Nitrogen can be obtained at many tire shops and automotive service centers. Mixing nitrogen with regular air is generally safe but may diminish the benefits of using nitrogen.

Overall, while nitrogen offers advantages in specific situations such as climates with large temperature variations or extensive highway driving, its benefits for everyday use may not justify the added cost for all drivers.
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