The engine oil filter element can filter the engine oil, and it is inevitable that there will be some impurities and particles in the circulation of the engine oil. The engine oil filter element can filter out the impurities and particles in the engine oil.
If there is no oil filter element, the particles in the oil will continuously circulate in the engine, which will exacerbate engine wear.

Method for distinguishing the advantages and disadvantages of oil filters:
1. Appearance: fine and rough appearance.
The printing on the housing surface of a fake oil filter is relatively rough, and the font is usually blurred. The factory logo font on the surface of a real oil filter is very clear, and the surface paint has a good texture.
2. Filter paper: filtration capacity.
A fake engine oil filter has a poor ability to filter impurities. On the filter paper, the filter paper is too dense, which can affect the normal flow of engine oil; If the filter paper is too loose, a large amount of unfiltered impurities will continue to flow with the engine oil, and over time, it will cause dry friction or excessive wear of internal parts of the engine.
3. Bypass valve: auxiliary function.
The function of the bypass valve is to provide emergency oil delivery when the filter paper becomes clogged due to excessive impurities. The built-in bypass valve of a fake oil filter does not have a significant effect, so when the filter paper fails, the oil cannot be delivered in a timely manner, leading to dry friction of some components within the engine.