I have twelve gallons of gas that's been sitting in my boat since the first week in June and i wondered if it was still good. Sent a e-mail to Seafoam's home office in Minn and this what it said:I see no problem with stabilizing fuel for 2 years. I have stabilized fuel<br />for 4 years with Sea Foam. If you are really concerned you can use the gas<br />up in your car a couple of gallons at a time when you fill up. Or you could<br />use 1 more can of Sea Foam and use it 1 can to 6 gallons of fuel. I do not<br />see the need, but at least this will give you a couple more options. Sea<br />Foam stabilizes fuel for longer than any stabilizer. If I can be of any<br />more help you can call @ (952)938-4811. Thanks for using Sea Foam.<br />Mark Hanson<br />President<br />Sea Foam Sales<br />(952) 938-4811<br />customerservice@seafoamsales.com<br />I can't find the post I put on the board Oct 30 asking about this, but it would sure be nice if it was true. Has anyone heard of PRI-G. This stuff is SUPPOSED to do what seafoam claims too-<br /> http://www.4seatow.com/sea/prig.htm. Sorry about the long post but I'm very curious about this.<br /><br />Dutch