Actually it was about 3 years and 5 months old. Put up in early Sept, 2002. Clean, 55 gal drums with PRI-G for a preservative. Looked and smelled just like fresh gasoline. Runs fine in pickup truck and Honda car. Price 1.23/gal.....Replacing it with 1.93/gal stuff. Just a field report for all those that ask "How long can I keep gasoline ?"