I believe that any of them will eventually go bad if the gas gets stale (years), but the new ones are warranteed for several years, I believe. They are made of a special gas-proof compound. Best treatment - either drive your car at least a few tanks of gas a year, OR drain the tank. Dave --- In dmcnews@xxxx, jus4sho@xxxx wrote: > Good Point Dave. I have one question though. After the years of sitting, my > original pickup line was just goo. Are the ones currently being sold a new > material or do they run the same risk (if neglected)? > > Steve