Misunderstandings in the use of automotive lubricants
Add as much lubricating oil as possible
The amount of lubricating oil should be controlled between the upper and lower markings on the dipstick. Because too much lubricating oil will enter the combustion chamber through the gap between the cylinder and piston and burn, forming carbon deposits. These carbon deposits will increase the compression ratio of the engine and increase the tendency to produce detonation; Carbon deposits in the cylinder are in a red hot state and can easily cause premature combustion. If they fall into the cylinder, it will intensify the wear of the cylinder and piston, and accelerate the pollution of lubricating oil. Secondly, excessive lubricating oil increases the stirring resistance of the crankshaft connecting rod, leading to increased fuel consumption.
When did the lubricating oil turn black? It's time to change the oil
This understanding is not comprehensive. For lubricating oil without the addition of a dispersant, the color turning black is indeed a sign of severe deterioration of the oil, but the lubricating oil used in modern cars generally contains a dispersant. This type of lubricant will wash off the adhesive film and black carbon deposits adhering to the piston, and disperse them in the oil, reducing the formation of high-temperature deposits in the engine. Therefore, the lubricating oil is prone to turning black after a period of use, but the oil has not completely deteriorated at this time.
Lubricating oil needs to be added frequently without replacement
Regularly checking the lubricating oil is correct, but only supplementing without replacing it can only make up for the lack of oil quantity, but cannot fully compensate for the loss of lubricating oil performance. During the use of lubricating oil, the quality will gradually decrease due to pollution, oxidation, and other reasons, and there will also be some consumption, resulting in a reduction in quantity.
Additives are of great use
Truly high-quality lubricating oil is a finished product with multiple engine protection functions, and the formula already contains various additives, including anti-wear agents. Moreover, lubricating oil emphasizes the balance of the formula to ensure the full play of various properties. Adding other additives on your own not only fails to provide additional protection to the vehicle, but also easily reacts with chemicals in the engine oil, resulting in a decrease in the overall performance of the engine oil.
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