Air is a mixture of 78% nitrogen, about 20% oxygen and assorted other gases. Because of the oxygen, it supports combustion. Its specific heat is 0.24 BTU per pound per degree Fahrenheit. Nitrogen is not able to support combustion. Its specific heat is 0.25 BTU per pound per degree Fahrenheit. Honestly, it doesn't make much sense to pay lots more for 0.01 more of BTU absorption!
Not enough difference to justify the expense unless you are driving a high speed race car. On a trailer or truck, nah!
First time you add air or if the place rips you off by not doing it correctly you have no way to go. Green caps! Whoopie
IMO, Nitrogen is the biggest consumer rip off since bottled water.
2011 351RLTS Eagle, Mor/Ryde suspension & pin box
06 F350 Lariat PSD, SRW, LB, CC, EGR delete kit, 16K DrawTite hitch, Timbrens, TST TPMS
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