1. Poor quality engine oil filter, using inferior filter paper to make the filter element. Due to the large pore size, poor uniformity, and low filtration efficiency of the filter paper, the filter cannot effectively remove harmful impurities, causing early engine wear and the filter cannot function properly.
2. Poor quality engine oil filters use low-quality adhesive with a small amount, which is not resistant to oil and cannot be firmly adhered, causing a short circuit at the bonding point of the filter element; Or use staples to connect the seams of the filter element, which cannot be sealed and short circuited, causing a large amount of harmful impurities to enter the engine, reducing the engine's lifespan.
3. Poor quality oil filters, replacing oil resistant rubber parts with ordinary rubber parts, can easily cause internal short circuits in the filter during use, leading to early engine wear and reduced lifespan. Or due to the expansion and deformation of external sealing components, the outer sealing ring of the oil filter may be squeezed out, resulting in a large amount of oil leakage in a short period of time, causing the engine to burn tiles, hold the shaft, and suffer serious damage.
4. Poor quality engine oil filter, with thin center tube material instead of thick, insufficient strength. During use, the center tube is compressed, the filter element is damaged, and the oil circuit is blocked, resulting in insufficient engine lubrication.
5. The metal components such as the end cover, center tube, and outer shell of the filter element were not treated with rust prevention, resulting in metal rust and impurities, making the filter a source of pollution. Moreover, replacing adhesives with cement poses greater risks.