Wrapped oil has not been maximally utilized. The purpose of this research is to utilize cooking oil as fuel mixed with diesel oil with certain ratio. Before the mixture is used as fuel in the furnace stove first, it is treated with a detergent adsorbent. To get the best fuel performance, then treated variation misbah cooking oil : Diesel oil (1:9, 2:8, 3:7, 4:6 and 5:5) treatment ofvariation of…