HS code-based risk profiling for exporters

The HS code-based risk profiling for exportersengine enters the antifreeze (heavy leaks. Please pay attention when driving, the engine enters the antifreeze!) In the daily maintenance of the car, the maintenance and replacement of antifreeze is an important part. In addition to preventing the water tank from freezing and cracking in winter, antifreeze can also protect the engine, avoid rust and corrosion of the internal parts of the engine, and improve the heat dissipation performance. However, if there is a small mistake in replacing the antifreeze, it may cause the engine to enter the antifreeze, causing serious problems. This article will introduce in detail the dangers and coping methods of engine antifreeze, hoping to provide some useful references for the majority of car owners. I. The harm of the engine entering the antifreeze 1. Cause oil dilution: Engine oil often needs to be replaced. Under normal circumstances, only the oil itself should be included in the engine oil, but once the engine enters the antifreeze, the antifreeze will enter the engine oil through the exhaust gas discharge system of the engine cylinder block. Therefore, the antifreeze is mixed with engine oil.After that, an "emulsion" will be formed, which will reduce the viscosity of the oil, reduce the lubrication effect, aggravate the friction of the engine, and cause engine failure in serious cases. Two. Burn the engine: The main component of antifreeze is ethylene glycol or propylene glycol, and contains some substances such as thermal conductive agents, acid-base regulators and stabilizers. When ethylene glycol or propylene glycol encounters high temperatures, it will decompose to form toxic gases. These gases will block the small-caliber pipes in the cooling system, resulting in overheating and overpressure of the engine cylinder wall and piston, causing damage to the cylinder liner, and even burning of parts inside the engine. 3. Cause the engine to fail to start: After the engine enters the antifreeze, the antifreeze may cause a short circuit in the ignition system, making the ignition system unable to work properly and causing the engine to fail to start. Four. For the environment and human healthHazards: The components of ethylene glycol and propylene glycol in antifreeze will have adverse effects on the environment and human health, causing environmental pollution and health risks. II. Coping methods 1. When you find signs of antifreeze entering the engine, stop and check immediately: When you hear the abnormal roar or abnormal noise of the engine, especially when the engine overheats or the antifreeze water level is abnormally frequent, you should stop and check, so as not to cause greater damage. Two. Discharge the antifreeze in time and clean the cooling system: Once the antifreeze is found in the engine, the antifreeze in the cooling system should be discharged immediately. At the same time, the cooling system and water pipes in the engine should be cleaned, including water tanks, radiators, pumps and water pipes. After that, the qualified coolant should be replaced, and try not to leave any residual antifreeze. 3.Check and replace damaged parts: In the process of cleaning the cooling system, you should check whether all water pipes, pumps and radiators are damaged and whether they need to be replaced in time. If serious damage to the engine is detected, you must take the car in person and drive it to a professional repair shop for repair. Personal maintenance is easy to leak, and it is difficult to clean it. It can only be solved with the help of professional tools. Four. Replace the coolant: Because the relatively dense substance in the antifreeze will adhere to the engine, the antifreeze should be replaced again after cleaning the parts. Then, the next time the antifreeze is replaced, it should be replaced according to the manufacturer's advice and the requirements of the instructions. Finally, car owners must pay attention to the replacement and maintenance of antifreeze to avoid unnecessary losses. During daily use, the normal operation of the cooling system and water pump should be checked regularly, which can prevent greater losses caused by car freezing and cracking in winter.I believe that this article can help more car owners and provide some references for driving safety and car maintenance.

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