for years, I ran into the problem of gasoline and diesel engines big and small struggling to start after extended periods of disuse, and this would drain batteries and cook starters and elevate operators' blood pressures. Then one day I was reading the MMO label as it had changed packaging a little bit, and I was reminded of MMO as a fuel stabilizer. Since I started putting it in the tank regularly, engine startups are quick, batteries are lasting longer, and working on starters is not an almost annual chore. So nowadays, I purchase the 32oz bottle of MMO annually as the container is graduated but the caps wear out, and the gallon jugs as needed to refill that bottle...tell your friends!