SL Oilfilter can prevent the dirt get into the lubrication system. That lube oil can stay in good condition to support a better engine performance. By pass valve can guarantee the smooth oil recirculation system for example the sticky oil flue under cold start or low temperature condition, extremely contaminated filter elements and high pollution condition where the filter exceeds the replacement cycle. Safety valve prevents the oil in filter from draining when the engine is switched off. This is to standby for engine start up. Advanced sealing materials and reliable connection ensure the isolation of dirt and cleaning oil. However, in order to achieve the best performance of the oil filter, an important factor must be considered: Replace all oil filters during the maintenance period specified by the vehicle manufacturer. 

During the entire service life of the oil filter its responsibility is to remove unwanted impurities and particles from the oil circulation. Once the mission is completed, the filter can be removed and replaced. Ideally, the filter is removed as a unit and cannot be split into separate waste. Therefore, the most advanced and environmental friendly solution is the eco oil filter module. It is constructed by the filtration media and environmental friendly plastic. High dust holding capacity, stability and high precision of the material can be perfectly applied to the relevant models, so that our filter can adapt to high intensity environment and present good performance. Advanced filtration media can extend maintenance intervals and continually to meet future high performance requirements.

By integrating auxiliary functions or features, the filter element lifetime can be further extended, for example, using c check diaphragm: the diaphragm keeps the engine oil in the engine block when the engine is stopped. The diaphragm can quickly feed oil to the engine when the engine is started, compared to a conventional check valve mounted in the housing.