How to distinguish between the true and false oil filters, owners who replace them by themselves should pay attention!

2023-04-19


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

Many car owners like to repair and maintain their cars and replace parts by themselves, but car owners have to learn to distinguish the authenticity from the merits 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 from the engine oil to protect the engine.The oil filter is divided into full flow type and shunt type.The full-flow filter is connected in series between the oil pump and the main oil channel, so it can filter out all the lubricating oil entering the main oil channel.The shunt cleaner is connected in parallel with the main oil channel to filter only part of the lubricating oil sent by the oil pump.

The full-flow oil filter of the oil filter shall be tested as follows in accordance with the ISO4548 standard.

Filter paper requirements

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

The filter paper material of the shoddy oil filter is poor. It is soaked in the oil for a long time. The filter paper itself has poor filtration effect in a high temperature and high pressure environment. At the same time, it also produces a lot of confetti, which leads to blockage of the oil circuit of the engine lubrication system or abnormal wear and tear of parts and components. In severe cases, the engine will not be supplied with oil, resulting in serious damage or scrap of the engine.The gasket of the sealing part of the shoddy oil filter is easy to age and crack at high temperature due to the poor toughness of the rubber. Therefore, the oil can easily jump out when the filter is combined with the cylinder block, causing oil leakage, poor engine heat dissipation and other failures, and the cylinder will explode in severe cases.

Distinguish between inferior oil filters

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

2. There is no bypass valve. If there is no, once the filter is clogged, the engine will not be able to obtain sufficient oil lubrication.

3. The filter paper materials are different, making it difficult to achieve the predetermined filtration effect.Low-priced filter paper is used to make filter elements. Because of its large pore size, poor uniformity and low filtration efficiency, the filter paper 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 leakage of oil under high temperature and 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. Metal parts such as the end cap, center tube, and shell of the filter element are not rust-proof, which causes the metal to rust and produce impurities, making the filter a source of pollution.

7. The workmanship of the metal oil-through mesh is rough, and it is difficult to ensure sufficient oil-through volume.

Maintenance

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