Hydrocracking reactions of used polyethylene were carried out by the use of various dual functional catalysts i.e. Pt/F on alumina, Pt/Sn/Cl/F on alumina, Ni/Sn/Cl/F on alumina and Co/Sn/Cl/F on alumina. Catalyst concentrations in the range of 30-40 % by wt, temperature (300-400 ℃), hydrogen pressure (400-600 psig) and reaction time (4-12 hours) were varied. The best catalyst was Pt(0.6%)/Sn(0.15%)/C1(1.21%)/ F(0.5%) on alumina The optimum conditions for hydrocracking of used polyethylene were: operating temperature at 400 ℃, under 600 psig hydrogen pressure, 12 hours reaction time and 40% wt of catalyst. The percentage yield was 94.8% wt. The product consisted of C10-C16 liquid hydrocarbons with gasoline properties.