Car oil can also be referred to as engine lubricant, engine oil, and motor oil. Car oil can be defined as any substance that consists of the base oils that are mainly enhanced with some additives. They are mainly anti-wear additives that prevent the engine from wearing and tearing. It is also used for lubrication of the internal combustion engines. The motor oil also neutralizes the acids that come from the fuels and prevent the oxidation. Therefore, It is very important for you to put oil in the engine to ensure that it is running well. However, after some time, you are supposed to change the oil and ensure that new oil is operating in the engine. You change the oil and put a new one to avoid many effects in your car. This is called servicing the car. Do reserach more about car servicing solutions.