The new process technologies developed during the past years made it possible to produce biodiesel from recycled edible oils comparable in quality to that of virgin vegetable oil. Biodiesel has an added attractive advantage of being lower in price. Thus, biodiesel produced from recycled edible oils has the same possibilities to be used. From an economic point of view, the production of biodiesel is very feedstock sensitive. From a waste management standpoint, producing biodiesel from used edible oil is environmentally beneficial, since it provides a cleaner way for disposing these products; meanwhile, it can yield valuable cuts in CO₂ as well as significant tail-pipe pollution gains. This paper is about 2 the manufacturing of biodiesel from the used vegetable oil. The study aims to define the requirements for biodiesel production by the esterification process, testing its quality by determining some parameters such as Degree API, Gross Calorific Value, Flash point, Specific Gravity and Fire point and comparing it to the commercial Diesel fuel, and the strategic issues to be considered to assess its feasibility, or likelihood of success. The experimentation was carried out for varying booster dosages from 0.2 to 1 gram at 60^oC. The experimental results show that the biodiesel obtained at the conditions of oil: alcohol ratio, 6:1, at catalyst dosage 1 gram, at a temperature of 60^oC and booster dosages of 0.2 to 1 gram was of good quality.