The main functions of in-depth maintenance of the lubrication system are cleaning, protection against wear and corrosion. The detergent according to the invention makes it possible to remove colloids, sludge and impurities from the lubrication system, improve the oxidation resistance of lubricants, increase the abrasion resistance between internal machines and extend engine life. The addition of cleaning agent and abrasive agent allows improve the quality of the lubricating oil, increase the low temperature fluidity of the lubricating oil, and prevent corrosion of internal engine parts.In addition, comprehensive maintenance helps to maintainremove these pollutants without disintegration and restore engine performance to a certain extent by adding additives with a wear repair effect. Complete maintenance of lubrication systems is usually done in two stages: cleaning and protection. 'Condition of lubricants before cleaning. If the lubricating oil is deeper in color or contains pollutants, the lubrication system should be fully serviced. The operation step is to inject new cleaning agent from the orifice. injecting engine lubricating oil, then tighten the injection port cover and start the engine for a while.The operation step is to inject new cleaning agent from theengine lubricant injection port, then tighten the injection port cover and start the engine for a while.The operation step is to inject new cleaning agent from the port lubricant injection of the engine, then tighten the injection port cover and start the engine for a while. Then shut down the engine and change the engine oil.injection and start the engine for a while, then shut down the engine and change the engine oil.injection and start the engine for a while, then shut down the engine and change the engine oil.