There is a new fuel additive that I saw advertised on a boat show last Saturday and it is called Formula X-2. It is supposed to be so much better than any other fuel stabilizer on the market. Before you throw all that gas away, I would contact them about this additive. 75 gallons of gas is a lot of money They have a web site and I would try to contact them about this before getting rid of the old gas...Thumbs Up