The ability of gasoline to resist oxidation under certain external conditions. Referred to as stability. Gasoline will oxidize in storage to form colloidal and corrosive oxides. Glue deposits in the fuel supply system of a car will reduce fuel supply and reduce engine power; glue deposits in the intake system will stick to the intake valve stem and duct and hinder valve operation. Gum is difficult to burn, and its harm is even greater than that of heavy fractions. Gasoline containing cracking components must be added with antioxidant and anti-glue agents and metal passivators to improve the stability of gasoline; sometimes gasoline detergents are used to inhibit deposits in the carburetor and air intake system.