Every time the replacement of oil, replace the quality of qualified oil filter, filter after a long period of use, the effectiveness of the filter will decline, the oil pressure through the filter will be greatly reduced.
And the regular use of the car, every travel up to 8000km did not save the oil filter should be replaced.
In the harsh environment, if you often travel in the dusty road, it should be up to 5000km per running on the replacement. In time to replace the excellent quality of the oil filter, impurities and pollution particles in the oil, will filter out through the filter. In this way, the oil into the oil will be relatively clean, so that it can effectively prevent the wear of the engine. Filter in the use of a period of time, the filter will be accompanied by a lot of dirt, it is necessary to replace the filter on a regular. Should be clear, if the replacement of the new oil, do not replace the oil filter, then the old filter will have 25% of the pollutants re-enter the circulation into the oil, which is not only increases the chance of wear, but also reduce the performance of the new oil. In general, the replacement of oil filter and oil at the same time, it will help to extend the life of the engine.