For excavators, tractors, trucks, and other construction machinery, the working environment is usually full of dust. So the dust, metal debris and other impurities will continuously mix into the oil. At the same time, air and burning waste gas keep oxidizing the engine oil, which will not only result in a colloid substance from forming in the oil, but also accelerate the abrasion of moving parts, and easily cause oil blockage.

Our oil filter has excellent performance, it can not only prevent dirt from entering the lubrication system, but also ensure the oil quality and high performance and efficiency of the engine. SL Filter installs a check valve for our filter products, which prevents the oil in the filter from entire evacuation when the engine is closed. And the filter element part is made up of filter paper and burnable environmental plastics, so our products are green and more helpful for environmental protection.