I have nitro in my truck tires, you can top off with air, but want to have the nitro recharged when you get to a place that will do it, Costco will. The purpose is the nitro does not have any moisture to it unlike compressed air, making it run cooler, nom rust to steel rims, and less expansion/ pressure variance in the tire. The big downside is finding some one to recharge or top of nitro on the road.
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Tony Z
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