Gasolines are treated with steel deactivators, that happen to be compounds that sequester (deactivate) metallic salts that otherwise speed up the development of gummy residues. The metal impurities could arise within the engine alone or as contaminants within the fuel. Detergents[edit] Standard unleaded gas is the lowest octane fuel at https://zanderbhfdx.yourkwikimage.com/646692/new_step_by_step_map_for_gasoline_sds