Since beginning of the industrial revolution, the air pollution has been enhanced due to fast increasing use of fossil fuels. The automobile sector has emerged as a major consumer of fuel oil and a major contribution to air pollution. Adulteration of fuel at point of sale and during transportation has become an acute problem in country. An experimental study has evaluated the effect of blending adulterant like kerosene, turpentine oil, hexane, ethyl alcohol, toluene etc. The test was carried out in this research work were done in order to determine the variation of physical properties (density, certain index and distillation rate) between pure and adulteration component of petroleum products.