Many car owners like to repair and replace parts for their cars by themselves, but car owners must learn to distinguish the authenticity when buying parts. Today, let's talk about how to distinguish the oil filter.

oil filter, also known as oil grid. It is used to remove impurities such as dust, metal particles, carbon deposits and soot particles in the engine oil to protect the engine. The oil filter is divided into full flow type and split flow type. The full-flow filter is connected in series between the oil pump and the main oil passage, so it can filter all lubricating oil entering the main oil passage. The shunt cleaner is connected in parallel with the main oil passage to filter only part of the lubricating oil sent by the oil pump.

oil filter full flow oil filter should be in accordance with the ISO4548 standards for the following test.

Filter paper requirements

Oil filters have higher requirements for filter paper than air filters. The temperature changes range from 0 to 300 degrees. Under severe temperature changes, the concentration of the oil also changes accordingly., This will affect the filtration flow of the oil. The filter paper of the high-quality oil filter can filter impurities under severe temperature changes to ensure sufficient flow.

The filter paper of the fake and inferior oil filter is of poor material. It is soaked in the oil for a long time. The filter paper itself has poor filtering effect under high temperature and high pressure. At the same time, it also produces a large amount of paper scraps, which causes the engine lubrication system to block the oil circuit Or cause abnormal wear of parts, and in severe cases, cause the engine to lose oil, resulting in serious damage or scrap of the engine. The gasket of the sealing part of the fake oil filter, due to the poor toughness of the rubber, is easy to age and crack at high temperature, so the oil is easy to burst out on the joint surface of the filter and the cylinder block, causing oil leakage, poor engine heat dissipation and other failures. The cylinder will burst.

Inferior oil filter resolution

1. The font on the surface of the filter is printed, blurred or not clear enough, the font is printed and the paint surface is inferior, and the thinner one is inferior.

2. There is no bypass valve. If not, once the filter is blocked, the engine will not be able to get enough oil lubrication.

3, filter paper material is different, it is difficult to achieve the predetermined filtering effect. The filter element is made of low-priced filter paper. Because of its large pore size, poor uniformity, and low filtration efficiency, it cannot effectively filter out harmful impurities to the engine, causing early engine wear.

4. The sealing material of the gasket is poor, which may cause oil leakage under high temperature and high pressure, and even cause fire. The sealing material of the gasket is good, and the rubber parts are regular.

5. The thread processing is precise, and there are no obvious turning marks on the thread.

6, filter element end cover, central tube, shell and other metal parts, do not carry out anti-rust treatment, resulting in metal corrosion to produce impurities, so that the filter has become a source of pollution.

7. The metal oil net is of rough workmanship, which makes it difficult to ensure sufficient oil flow.