DOES GASOLINE EXPIRE?
The answer is yes. How long does gas last? That depends on a variety of factors, such as what type of fuel it is and how and where it is stored. Heat, oxygen and humidity all have an impact on the condition of stored fuel.
In general, pure gas begins to degrade and lose its combustibility as a result of oxidation and evaporation in three to six months, if stored in a sealed and labeled metal or plastic container. Ethanol-gasoline blends have a shorter shelf life of two to three months. Fuel stabilized gasoline can last between one and three years under optimal conditions. Gas stored in a car tank begins to degrade in just about a month.
