07-19-2008, 08:08 PM
|
#19 (permalink)
|
|
Senior Member, Literally
Join Date: Sep 2007
Location: woodland hills, CA
Posts: 1,637
|
Costco doesn't charge for nitrogen. Here's a pretty good article on nitrogen.
http://www.straightdope.com/columns/070216.html
__________________
|
|
|