Magnetic oil filters, or magnetizing devices, on the market now have the following types:

1, this oil filter can not see the existence of magnetic products in the external or internal, and can not detect magnetism, it is a false name added to the existing ordinary oil filter, in order to sell high prices and deceive consumers.

2. A magnetizing device with a shielding layer is installed on the existing ordinary oil filter shell
The magnetizing device of the oil filter is a fixed structure after the magnet is equipped with a shielding material, or the magnetic force of the magnet itself is adsorbed on the existing filter shell to adsorb the ferromagnetic impurities in the oil in the filter. However, in actual use, because most of the magnetic field is shielded by the oil filter housing, the magnetic field utilization efficiency is extremely low and basically does not work. In addition, when the vehicle is driving on the bumpy road, it is easy to cause the filter to leak oil or fall off, causing immeasurable damage to the vehicle.

3. Directly adsorb one or several magnets on the surface of the existing ordinary oil filter shell
This magnet is directly adsorbed on the existing oil filter shell, whether it is pasted on the side of the oil filter or the bottom of the oil filter, not only can not filter, but also interfere with the normal work of other electronic equipment on the vehicle, and the danger is extremely serious.

4. Set the magnet on the by-pass valve housing
Because the filter is working normally, the bypass valve is closed. The oil is recycled back to the engine through a paper filter, and the main oil flow rarely touches the by-pass valve. Therefore, the magnet is set on the bypass valve housing, not only the filter effect of ferromagnetic impurities is small, but also lead to the bypass valve failure, so that the oil in the circulation flow directly back to the engine through the bypass valve, resulting in non-ferromagnetic impurities can not be effectively filtered by the paper filter, or make the bypass valve blocked, bursting the paper filter.

5. Strong magnetic oil filter
The strong magnetic filter element is arranged in the center tube of the filter near the oil outlet end. The filter's own shell and the center tube are used to replace the magnetic field shield layer, and the strong magnetic field outside the filter shell is double-shielded to avoid the strong magnetic field leakage of the strong magnetic filter element to interfere with other equipment.