Tires can be processed using pyrolysis to produce fuel, char, and gas as they do not disintegrate completely in the environment. This study focused on tire pyrolysis TP as an additional source of fuel as oxygenate blends, and conducted on a four-stroke diesel engine operating at 1500 rpm to test and compare pure diesel from Basra refinements DA 100% with other fuel categories. The fuel mixture was made using the electrical mixture DA75%+TP25%, DB75% (high density diesel) from Dourah refinements+TP25%, and DA50%+DB25%+TP 25% this samples has been tested with and without pre-heating in diesel engine. Then all samples are placed in an Ultrasonic device to ensure a perfect mixture. It was found that the addition the TP decrease the engine power in all situation, and the maximum BTE% recorded for DA100%, and decreased for other samples by 7.7 and 11.9% when using DA75+TP25%, DB75%+TP25% respectively. The volumetric efficiency decreased by 7%, and all engine emissions recorded increased by 42.8%,10.71%,5.62%,78.125%, and 44.83% for CO, CO2, UNH, NOx, and smoke opacity for DB75%+TP25% compared with Basra pure diesel. Moreover, heated fuel to 60 oC, DA50%+DB25%+TP25% appears to behave like DA100% in both engine performance and emissions.