Biodiesel is the best alternative for Diesel fuels in Diesel engines. The biggest advantage that Biodiesel has over petroleum Diesel is its environmental friendliness. Different types of additives were used to enhance Biodiesel properties and its performance in the Diesel engine 26.12 kW. Biodiesel was produced from waste vegetable oil and additives which have been used are Gasoline, Kerosene, Diesel and Turpentine. Different additives to Biodiesel were tested and compared with Diesel fuel. The engine performance, fuel consumption, and emission were tested on PTO tractor at 540 rpm. It was found that power was increased by using B50SG (Biodiesel 50 % plus 50 % Solar and Gasoline) compared to Diesel fuel about 5.14 %. While, fuel consumption decreased about 5.92 % using B50SG compared to Diesel fuel. Also, there was statistically significance difference between all levels of additives and the Diesel considering the concentration of evolved carbon monoxide (CO), indicating the dramatic decrease in the concentration of CO due to the component of Oxygen in Biodiesel treatments which resulting in complete combustion. The exhaust gas temperature decreased using additives as there was statistically significance difference between the different of 24 treatments of the additives and Diesel. Additives did not affect much on NOx compared to Diesel fuel.