How to map complex products to HS codes

Engine lubrication cleaning - Easy engine maintenance,How to map complex products to HS codes lubrication cleaning in one step with the wide application and popularization of automobiles, engine maintenance has become an indispensable and important task for car owners. The engine is the heart of the car and the most critical power system, which needs careful care and maintenance. Among them, the lubrication and cleaning of the engine is a very important maintenance measure. This article will introduce in detail the concept, principle, operation method and precautions of engine lubrication cleaning to help readers easily maintain the engine and lubrication cleaning in one step. I. The concept of engine lubrication cleaning Engine lubrication cleaning refers to removing oil scale, oil sludge and other dirt inside the engine through specific chemical cleaning liquids and cleaning methods, and adding new oil after cleaning.The main purpose is to remove sediment inside the engine, improve the lubrication effect of the engine, and extend the life of the engine. II. Principle of engine lubrication cleaning The principle of engine lubrication cleaning is to thoroughly clean the dirt and sludge through the penetration, dispersion, emulsification and flushing of chemical cleaning liquid, so that the surface of the moving parts inside the engine is smooth, the friction coefficient is reduced, and the lubrication effect is improved. At the same time, the new oil added after the lubrication cleaning operation can better lubricate the internal moving parts of the engine. III. Operation method of engine lubrication and cleaning 1. Preparations include the car in the start-up state and wait for the engine to run smoothly; the vehicle is placed on the open space or in the shop to prevent the ground from being polluted; the vehicle is filled with appropriate chemical cleaning liquid; the vehicle is filled with cleaning liquid and driven for 20 to 30 minutes, so that the cleaning liquid is mixed evenly inside the engine.Two. Operation steps (1) Remove the engine oil pan with a tool and empty the old oil; (2) Pour the cleaning solution into the engine oil pan; (3) Close the oil hole, start the engine, and let the engine run for 20 to 30 minutes; (4) Cut off the ignition switch and empty the cleaning liquid; (5) Add New oil, remove the oil filter and replace the new oil filter; (6) Start the engine and observe whether the oil pressure gauge data is normal; (7) Try to drive and check whether the fault is solved. IV. Precautions for engine lubrication and cleaning 1. Be sure to follow the operation steps, pay attention to safety, and prevent accidents; 2. The use of cleaning liquid must meet the corresponding standards and regulations, and shall not be used for unauthorized illegal chemical cleaning liquid; 3. For mileage exceeding50,000-kilometer vehicles, in order to ensure the best effect, please cooperate with the engine cleaner to do a more thorough cleaning; 4. The engine lubrication and cleaning are completed in the store, and the car is mainly operated by a qualified and professional car repair shop. V. Conclusion Engine lubrication cleaning is a very important car maintenance project, which can improve the work efficiency of the engine and extend the service life of the machine. Car drivers should pay attention to this work. Under the premise of ensuring their own safety, they should choose a regular car repair shop to operate according to the specifications to create a favorable environment for the maintenance of their cars.

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