NOVELTY - Production of premium grade unleaded-type gasoline or gasoline blend having octane number of greater than 95 and low vapor pressure includes adding aromatic amine-based additive (0.1-3 vol.%) to low octane number product until obtaining preset octane number. The maximum content of total aromatic compounds is 35 vol.%. The maximum content of oxygenated compounds comprises (vol.%) methanol (3), ethanol (5), isopropanol (10), t-butanol (10), greater than or equal to 5C ether (15), and other oxygenated compounds (10).    USE - Process for producing premium grade unleaded-type gasoline or gasoline blend useful as fuel for vehicles with internal combustion engine and controlled ignition.    ADVANTAGE - The process utilizes non-polluting and low-concentration additive which does not damage anti-emission system of modern vehicles; allows production of high RON and MON gasoline, without increasing the content of aromatic and/or oxygenated compounds and the vapor pressure; allows recovery of non-specification tank, thus avoiding costly and lengthy reformulation and remixing operation; can utilize lower-grade cuts; can operate with lower severity plant conditions, thus lowering internal consumptions of refineries and reducing greenhouse effect gas emissions; can use condensate without processing; avoids unfeasibility of production of high-octane number gasoline, thus enabling vehicles fitted with knock sensor to operate under attitude conditions of optimal adjustment (maximum power/minimum consumption); maximizes the production of high-octane gasoline to facilitate design of engines having high compression ratio and high efficiency to allow reduction of fuel consumption and greenhouse effect gas (carbon dioxide) emissions in the transportation field; and can completely remove oxygenated products from gasoline, thus improving engine efficiency by introducing greater energy content per cycle, i.e. preventing introduction of oxygen with the fuel.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for an unleaded-type gasoline or gasoline blend having octane number of greater than 95 and comprising aromatic amine (0.1-3 vol.%).