Engine oil is the most important lubricant in the automotive industry. To optimize the performance of any vehicle specialized lubricant, various additives such as detergents, Dispersants, anti-wear agents, anti-oxidants, etc. must be mixed with the base oil. These additives provide different performance levels depending on their structure, composition, and compatibility with each other. Various companies around the world classify engine oils based on some specific tests by simulating the operating conditions of the automobile engine. The American Petroleum Institute (API) has divided motor lubricants into two groups of gasoline and diesel engines. The group that begins with the letter S denotes the efficiency levels of gasoline engines whose performance improves with the letters next to it.