Lubrication is the use of lubricants to reduce (or control) the frictional force or other forms of surface damage between two friction surfaces, thereby reducing friction. Due to contact between two different surfaces, friction occurs and the following consequences occur: wear, noise, and high temperature. If we add lubricant between the two, we can reduce the occurrence of the above situation. Lubricating oil is also one of the lubricants, which can form an oil film on the surface of the machine and lie between two parts in contact with each other. This makes the activity between the two easier, smoother, and faster, greatly reducing the damage caused by friction; Therefore, if you want the engine to achieve the best lubrication effect, choosing the correct lubrication is very important.