NOVELTY - Fuel additive formulation comprises organic nitrate, a lubricant, an anti-corrosive agent and ethanol, methanol or their mixture. The organic nitrate is selected from ethyl-9-ethoxy-10,12-dinitrato stearate, ethyl trans-9-ethoxy-10-nitratostearate, ethyl-9,10,12-trinitratostearate, ethyl trans-9,10-dinitratostearate, ethyl 9-ethoxy-trans10-nitratostearate, methyl 9-ethoxy-10,12-dinitratostearate, methyl trans-9-ethoxy-10-nitratostearate, methyl-9,10,12-trinitratostearate, methyl-9,10-dinitratostearate, methyl 9-ethoxy-trans 10-nitratostearate or tetrahydrofurfuryl nitrate.    USE - Fuel additive formulation, particularly alcoholic fuel additive formulation used in diesel engines (claimed).    ADVANTAGE - The fuel additive formulation ensures enhanced cetane number, improves ignition of fuels and operation of engine, and promotes reduction of greenhouse gas emissions i.e. reduces the amount of emission of carbon dioxide, thus it lowers environmental pollutants.    DETAILED DESCRIPTION - Fuel additive formulation comprises organic nitrate, a lubricant, an anti-corrosive agent and ethanol, methanol or their mixture. The organic nitrate is selected from ethyl-9-ethoxy-10,12-dinitrato stearate, ethyl trans-9-ethoxy-10-nitratostearate,    ethyl-9,10,12-trinitratostearate, ethyl trans-9,10-dinitratostearate,    ethyl 9-ethoxy-trans10-nitratostearate, methyl 9-ethoxy-10,12-dinitratostearate, methyl trans-9-ethoxy-10-nitratostearate,    methyl-9,10,12-trinitratostearate, methyl-9,10-dinitratostearate,    methyl 9-ethoxy-trans 10-nitratostearate, tetrahydrofurfuryl nitrate, isopropyl nitrate, n-butyl nitrate, isoamyl nitrate, n-hexyl nitrate, 2-octyl nitrate, 2-ethoxyethyl nitrate, n-octyl nitrate, n-heptyl nitrate, cyclohexyl nitrate, 2-ethylhexyl nitrate, diethylene glycol dinitrate, triethylene glycol dinitrate, tetraethylene glycol dinitrate, 2-(4-morpholino)ethyl nitrate, 1,3-dimethoxy-2-nitropropane, 1,3-diethoxy-2-nitropropane, 2-nitro-1,3-dipropoxypropane or 1,3-dibutoxy-2-nitropropane.