I agree with NW Jeeper. If your RV came with a nitrogen fill, then that is great. But if you are thinking about paying to get that, then save your money.
The air coming from an air compressor is 80% nitrogen. Most nitrogen fills can give you at most 95% nitrogen, and that is best case conditions. So that extra 15% is really going to make a difference?? And I don't belief in all of the hoopla over the benefits of nitrogen over plain old air. If you gotta pay for it, save your money.
Chap , DW Joy, and Fur Baby Sango
2006 Ford F150 Super Cab 4x4
2008 Surveyor 263