The production of premium gasoline, marketed as "super", has been limited in the country's refining plants. According to Shana, the Oil Ministry's news portal, the restriction is due to technical problems in transferring the fuel from refineries to destinations. National Iranian Oil Production and Distribution Company has announced that Shazand Refinery in the central city of Arak, Markazi Province, Persian Gulf Star and Bandar Abbas refineries in the southern Hormozgan Province as well as Isfahan Oil Refining Company have limited their premium gasoline output. The gasoline is sold in major cities such as Tehran, Isfahan, Shiraz, Tabriz and Mashhad. Reportedly, there is only one pipeline to transfer the fuel to mega cities and when there is a technical problem, refining complexes cannot transfer as much as they produce. Regular gasoline in Iran has an octane number of 92 and the number for premium gasoline is 95. Gasoline consumption in the fourth Iranian month that ended on July 21 reached an unprecedented average of 91.7 million liters per day.
