Airplanes are extremely complex instruments that need every single component to be in optimum working condition, and even a minor glitch can result in a lot of loss of life and money. When it comes to complex devices that are required to carry enormous amounts of weight against gravity, it is only logical to think that it consists of multiple components working together with precision. This precision can be set off balance with just the friction between the components. This is especially a big problem with piston engine aircraft as the piston configuration means higher levels of friction. However, this problem is removed by the use of aviation oil. Aviation oil is specifically designed to streamline the movement between different components in the engine of an aircraft.