Blending is an important process in determining the quality of fuel products and profit generation in a refinery. It is done with the help of crude oil products. They are blended and utilized in the production of fuel oil blends, which have high market demand. This way, costs are kept low by using refinery products. Blending increases refinery margins without affecting the physical properties of the final products. This topic will discuss product yields, types of blending, gasoline blending, diesel blending, kerosene blending, fuel oil blending, lube oil blending, naphtha blending, stationary batch tank lube in-line blending, moving batch tank lube in-line blending, etc.