The first step is distillation. After the oil is heated to a high temperature, it turns into the form of vapor. After it is cooled and heated the vapor changes into a liquid. Medium and light-weight liquids require less work before being put into trucks. Cracking is used in order to make the most use of carbon heavy. The molecules are then broken down into smaller chains making use of catalysts. This breaks the oils to smaller chains. One of the items removed in this process is crude oils. The amount of molecules in the process is similar to the number of molecules that are found in gasoline. Mixing , refinding and blending is called blend. Blending gasoline is done so that it can reach the octane requirements. Premium and regular gasoline meet the demands of particular engine types. Treating is a process used to create more clean gasoline. Sulfur can be removed from gasoline molecules. When they come in contact with catalysts, it eliminates sulfur. If you are interested in lending more bout distilling, watch this video to find out more. o6cl9izcvz.