5. The center pipe material of oil filter is thin instead of thick, and the strength is not enough. In the process of use, due to the suction of the center pipe, the filter core damages and blocks the oil road, resulting in insufficient lubrication of the engine; Or the poor reliability of the bite, the bite in the use of the process of pulling, resulting in a large amount of oil leakage in a short time, resulting in burning tile, holding shaft.
　　6. The end cover, central pipe, shell and other metal parts of the filter element are not treated with rust prevention, which causes metal corrosion and produces impurities, making the filter a pollution source. More than that, cement instead of adhesive, its harm is greater.
　　Accordingly, inferior filter cost is very big, suggest each user must be careful when replacing filter. Had better choose original factory fittings, in order to avoid unnecessary economic loss.
　　This article is organized by dongguan oneness filtration technology co., LTD