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Automotive lubricants are used at a very high frequency during maintenance. In addition to protecting the engine and reducing the number of oil changes, high-quality lubricants can also save on gasoline expenses. At the same time should also pay attention to not cause improper use of lubricants caused by improper use of the car, "improper" use of the method is generally derived from the four kinds of lubricants Cheyou "misunderstanding."
For the following four "misunderstandings", the relevant technical personnel gave a professional explanation:
Misconception 1: Lubricants are frequently added without changing the lubricating oil. Correcting the lubricating oil is correct. However, the replacement of the lubricating oil does not replace only the deficiency of the amount of oil, but it cannot completely compensate for the loss of lubricating oil performance. During the use of lubricating oil, the quality of the lubricating oil will gradually decrease due to pollution, oxidation, etc. At the same time, there will be some consumption and the quantity will decrease.
Misconception 2: The use of additives The real high-quality lubricants are finished products with a variety of engine protection features. Formulations already contain a variety of additives, including anti-wear agents, and lubricants are the most balanced formulation to ensure full performance. Play. Adding other additives by themselves will not only bring no additional protection to the vehicle, but will easily react with the chemical substances in the engine oil, resulting in a decline in the overall performance of the engine oil.
Misconception 3: When the lubricating oil turns black, the oil change is not comprehensive. For lubricating oils that do not add a clear dispersant, the color blackening is indeed a sign that the oil has been seriously deteriorated, but the lubricants used in Hyundai Motors are generally added with a decomposing agent. This kind of detergent will wash the adhesive film and black coke adhering to the piston and disperse it in the oil to reduce the formation of high-temperature deposits in the engine. Therefore, after the oil is used for a period of time, the color will easily turn black, but at this time The oil has not completely deteriorated.
Misunderstanding 4: Lubricating oil can be added more. The amount of lubricating oil should be controlled between the upper and lower scales of the oil dipstick. Because too much lubricating oil will enter the combustion chamber from the gap between the cylinder and the piston to form a coke combustion. These coke deposits will increase the engine compression ratio and increase the tendency to produce knocking; coke deposits in the cylinder in a red hot state can also easily cause premature combustion, such as falling into the cylinder will increase the cylinder and piston wear, but also accelerate the pollution of the oil. Secondly, too much lubricating oil increases the stirring resistance of the crankshaft connecting rod and increases the fuel consumption.