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Physico-chemical characteristics such as specific gravity, reid vapour pressure, copper corrosion, distillation (I.B.P., F.B.P., Total recovery & residue) and hydrocarbon contents (saturates, aromatics and polars) of gasoline of different oil marketing companies collected from retail outlets in district Multan have been analysed using standard ASTM procedures. Results have been compared with the Pakistani, Indian and European specifications to assess the quality of Pakistani gasoline (petrol). The environmental impact of gasoline has also been assessed.