A bit of good news, a bottle of replacement sealant can be bought on the internet with shipping from UK for ~$59:
http://www.care4car.com/viewcart.php?changerow_quantity=144043_1
also it can be found on UK eBay for even less, however I don't know if they would ship to US.
Still, even with those prices spare tire from Altima sounds like a better solution.![Cool :cool: :cool:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
http://www.care4car.com/viewcart.php?changerow_quantity=144043_1
also it can be found on UK eBay for even less, however I don't know if they would ship to US.
Still, even with those prices spare tire from Altima sounds like a better solution.