104+ was America’s first Octane Boost, created in 1975. 30+ years later, with a unique combination of performance-enhancing additives, 104+ is still the best Octane Boost you can buy. 104+ MAXIMUM has DOUBLE the Octane Boost of our Regular Formula. No other Octane Boost gives you more.
STA-BIL, America’s top selling fuel stabilizer, is a blend of scientific additives that prevents fuel from deteriorating so engines start quickly and easily after storage.