As one of the items must be done in a minor repair, the oil filter often needs to be replaced. However, some owners may think that the function of the oil filter is to filter impurities in the oil. Why should I change the oil? In fact, it must be the reason why the oil has been used for a long time and lost its performance. There are other reasons. Let's explain the working process of the lubrication system from Jinan automatic gearbox maintenance manufacturer.

　　这就是机油过滤器经常被更换的原因

　　This is why the oil filter is often replaced

　　机油，也叫机油，通常储存在发动机底部的油底壳里。当发动机运行时，一部分发动机功率将由发动机油泵把油抽上来，然后泵的压力将它送到发动机的各个部位进行润滑。润滑过的油沿井壁滴入油底壳，然后泵入润滑部件。经过反复润滑，磨损的金属屑或粉尘会与机油混合，只会加速滑动面的磨损。因此，必须在油路上安装机油滤清器，以便随时对机油进行过滤。即使这样，油在很长一段时间后会变脏，所以你必须在行驶一段距离后更换机油。这种油在润滑时会产生冷却效果。

　　Oil, also called engine oil, is usually stored in the oil pan at the bottom of the engine. When the engine is running, part of the engine power will be pumped up by the engine oil pump, and then the pressure of the pump will send it to all parts of the engine for lubrication. The lubricated oil drips into the oil pan along the well wall, and then pumps into the lubricating parts. After repeated lubrication, the worn metal chips or dust will mix with the engine oil, which will only accelerate the wear of the sliding surface. Therefore, the oil filter must be installed on the oil circuit in order to filter the oil at any time. Even so, the oil gets dirty after a long time, so you have to change the oil after a long distance. This oil has a cooling effect when lubricated.

　　济南自动变速箱维修厂家解释说，过滤器只能过滤与机油混合的金属碎片、灰尘(空气中的灰尘)。所以你不仅要更换过滤器，还要根据维护手册更换机油。

　　Jinan automatic gearbox maintenance manufacturer explained that the filter can only filter the metal debris and dust (dust in the air) mixed with the engine oil. So you should not only change the filter, but also change the oil according to the maintenance manual.