I tried this system several years ago, It will extend the flavor of wine for a little while, but as has been mentioned in the previous entry, there is still some oxygen let in the bottle that will allow the wine to oxidize. A much better solution is to buy a can of compressed nitrogen to cover the surface of the wine and keep it from the oxygen. You still need to cork the bottle and keep it upright during storage.You can also use the gas layer storage method on oils, single malt scotch, etc.