Views: 64 Author: Site Editor Publish Time: 2021-05-14 Origin: Site
After a car maintenance oil change, sometimes the owner feels that the engine noise is louder than before. He always wonders if there is something wrong with the oil change? Is it a fake engine oil change?
In fact, the problem is not that simple. There are many reasons for engine noise caused by oil change. Here is a small part that can help you solve the problem.
The viscosity of the oil is inversely proportional to the operating temperature of the engine. In the cold state, the viscosity of the oil is high. If the oil chosen is thicker, it will increase the loss of parts. However, if the oil is too thin, it is difficult to form sufficient protective film in high temperature environment, resulting in insufficient lubrication and increased wear of parts. Owners are advised to choose their engine oil according to the recommendations in the manual. If they want to choose their own engine oil, it is recommended that they choose well-known brands such as Mobil, Topland, Castro, etc.
Fake engine oil is also one of the culprits of engine noise. Due to the lack of strict production process and poor quality base oil, the anti-wear, cleaning and lubrication protection performance of "fake" engine oil is very poor, which aggravates the engine wear and noise. As consumers, car owners need to know some methods to identify the authenticity, especially some new car owners, do not be greedy for cheap and use some poor quality motor oil. We need to buy from regular channels, such as the official website, the brand's designated dealers, large 4S stores, etc. Recommended to Topland's official website, imported from Germany, the quality is safe and reliable, you can check the authenticity.
There is a certain range of oil addition, not the more the better. If the amount of oil added exceeds the standard range, it will produce a greater resistance to the rotation of the crankshaft, thus affecting the power output and causing the engine oil to enter the combustion chamber, producing carbon and burning engine oil. At the same time, the air-fuel ratio of the combustion chamber will change, thus increasing the chances of detonation and noise. When cold, the oil level should be between the lowest scale and the highest scale, neither too low, nor too high.
When the car is cold, most of the oil flows back into the oil pan, resulting in insufficient lubrication of the parts. In this case, when the car starts, the engine noise will be too loud. However, under normal conditions, the noise will return to normal after the car is warm. If it does not return to normal, the cause needs to be investigated.
With the long-term use of oil, the oil will become thinner and thinner, accordingly, there will be more and more carbon deposits and oil and gas scurrying. When the new oil is just replaced, the engine cannot fully adapt to the viscosity of the oil, resulting in excessive engine noise.
Due to the carelessness of car owners, the mixing of motor oil happens from time to time. Due to the different formulations of different brands of engine oil, mixing may produce adverse chemical reactions, leading to engine wear and noise increase. It is recommended not to mix as many engine oils as possible. In special cases, try to use the same grade of oil.
This factor is also very common. Some car owners will have preconceived ideas. To avoid this subjective error of judgment, it is best to use a decibel meter to measure it.
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