the results showed the highest yield of bio oil as 38.22 while the charcoal and tar yields were 18.93 and 6.59, respectively. the results of fuel's analysis showed the heating value of synthesized bio oil was 22.11 MJ/kg, viscosity 2.071 cSt, pH 2.36 and flash point 70 C. Additional Para
rubber residue showed the highest yield of bio oil as 34.35 while the charcoal and tar yields were 20.90 and 18.15,