Quote:
Originally Posted by martymcfly
Costco switched to 100% Nitrogen a year back. All tires from them are filled with Nitrogen; there is no other option. The valve cap color changed to light green to indicate that it is Nitrogen filled tire.
What I don't understand is that I don't know how to keep it 100% Nitrogen when I need to refill. Maybe it is a more of a marketing gimme.
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Costco will give you free refills.
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