Full loss system oil, also known as mechanical oil, has various excellent characteristics. It has good wear resistance and can provide effective protection for mechanical systems; At the same time, it also has excellent rust and corrosion resistance, which can extend the service life of mechanical moving parts. In addition, the full loss system oil also has good oxidation stability and anti foaming performance, as well as shear stability at high temperatures, which can provide continuous lubrication effect in high temperature environments.