we just bought a 5500.00 dollar machine at work for filling car and truck tires. has anybody on here filled there floats with nitogen. thay say nitrogen leaks out slower because the molacule is much larger than o2. also helps with corsion. just wondering if any one has tried this yet. i have had no problem with leaking after 1500 mi. since i can do it for free at work im going to do mine. it cost 6 to8 dollars to fill a car or truck tire.