Originally Posted by DangerZL1
Maybe his dealer put it in. I think mine did because the stems have a green cap.
I don't think you could do it unless you had a nitrogen tank. The tire places have a machine that removes the O2 from the air. It's too much trouble to go to a tire store and have them put air in, so I've decided nitrogen is more trouble than its worth.
the shops do not remove O2, they remove the water with a air conditioner type unit the cools the air to get the water out.
The dealer tried to sell me nitrogen fills for my tires, that a load of crap and a waist of money.