Oil is one of the most important elements of the engine along with the other things. In the automobile industry it is known as engine oil or lubricant oil that is important for lubricate the inside of engine to keep it running for long time. Oil help wear and tear inside the engine and also it is used as cooler that keeps the temperature low for the various parts of the engine like piston rings, bearings, etc. Oils also help engine to stay corrosion free that are caused by the gases of combustion. In earlier years, the whale oil was very famous for to work as lubricant, but then it was banned back in the year 1980 all over the world. That is when researchers made different types of lubricant oil from the crude oil. Now in today’s world, people can find lubricant oil in various graded and categories. Some of the oil categories are also available for regular vehicles and high-performance vehicles.