In the past,waste lubricant oil eliminated by distillation again or to lubricate small machines.Moreover, to remove additives, water, metal and contaminant from waste lubricant oil. Then it applicates in the manufacturing of lubricants and rubber products. all of them is not the best way to eliminated waste lubricant oil. In this research, to study fuel synthesis from waste lubricant oil for the waste lubricant oil to take advantage as much as possible.