Hello, Has anyone here heard of a newer process or procedure for treating old gasoline making it useable again. A co-worker said he heard of something where the gas is pumped through a filter and treated with addatives making it good again. I know, i know, Yeah, right. I thought the same thing i'm familiar with a similar sounding procedure of running diesel through a filter and pressure cleaning tank but never gasoline. Can you polish gasoline similarly? My search online only turned up what is commonly known on the subject and was not able to find an option involving treatment . Again, i'm skeptical but figured it's worth a shot asking here as I have about 120 gal of 5yr old gas to deal with and if theres an option out there other than pumping out and paying for disposal I'd like to hear about it. Thanks to all who take their time to contribute their experience and knowledg here. This forum is a great resource for all boaters and y'all are much appreciated.