It had been done the study of crude jatropha oil usage by heating jatropha seed as kerosin mixed matterial for a fUell. The aim of this research ware to know the rendemen of crude jatropha oil and the optimum condition blending between crude jatropha oil and cerosine. The blending B0, B25, B50, B75, BI00 were characterized by using ASTM (American Society for Testing Materials) method. The param…