Automatic transmission car is easy to use and convenient, especially suitable for driving in urban traffic, which brings great convenience to car owners. However, the automatic transmission system is a very precise assembly, especially the manual automatic transmission, whose structure is more complex. Therefore, once the automatic transmission fails, the maintenance is very troublesome and expensive. Therefore, the automatic transmission needs more careful care and maintenance. Among them, the important thing should be the maintenance and replacement of transmission oil. As an automatic transmission oil, the impact during gear shifting is great. Although our car owners can't feel it, the wear is much higher than that of ordinary manual cars. Therefore, it is very important to choose a suitable lubricating oil and replace the lubricating oil regularly.

1、保养变速箱换油是关键。如果近来发现您的自动挡车换挡时震动比较大，换挡速度比较迟缓，那说明该给变速箱换机油了。自动排挡车不比手动排挡车，手动变速箱构造比较简单，即使该换机油了多撑一些日子也无妨，但自动排挡车的换油可省不得，2万公里该换就得换，否则时间一长，车子就容易出问题，这是因为自动挡车在使用过程中不断自动换齿轮，齿轮难免出现磨损。自动排挡润滑油剂会在变速箱的各部件外层“包”上一层保护膜，排挡移动时就会更顺畅。一般不管是手动变速箱还是自动变速箱建议12个月或2万公里更换一次自动变速箱油。

1. Maintaining the transmission and changing the oil is the key. If it is found recently that your automatic block has a large vibration when shifting and the shift speed is slow, it indicates that it is time to change the oil of the transmission. The automatic transmission is not as simple as the manual transmission. Even if the oil should be changed for a few more days, it doesn't hurt. However, the oil change of the automatic transmission can't be saved. You have to change it when you need to change it for 20000 kilometers. Otherwise, the car is prone to problems over time. This is because the gear of the automatic transmission is inevitably worn due to the continuous automatic gear change during the use of the automatic transmission. The automatic gear lubricant will "wrap" a layer of protective film on the outer layer of all parts of the gearbox, which will make the gear move more smoothly. Generally, whether it is manual transmission or automatic transmission, it is recommended to replace the automatic transmission oil once every 12 months or 20000 kilometers.

2、定期检查变速箱油。自动变速箱内注入的是一种叫ATF的润滑油，它的作用除了润滑降温，更主要的是要传递发动机和变速箱之间的动力。ATF机油的工作温度一般在120摄氏度左右，因此对机油的质量要求很高，还需要保持清洁。

2. Check the transmission oil regularly. A lubricating oil called ATF is injected into the automatic transmission. Its function is not only to lubricate and cool down, but also to transfer the power between the engine and the transmission. The working temperature of ATF engine oil is generally about 120 ℃, so the quality of engine oil is very high and it needs to be kept clean.

3、要经常检查自动变速箱油液位是否正常。自动变速箱油的检查方法与发动机油不一样，发动机机油在冷却状态下检查、而变速箱油是需要将油预热到50℃左右，再将挡位杆在各挡位停留2秒钟后置于停车挡，此时油尺正常油面应位于高与低线之间，如不够，应及时添加相同品质的润滑油品。

3. Always check whether the automatic transmission oil level is normal. The inspection method of automatic transmission oil is different from that of engine oil. The engine oil is inspected when it is cold, and the transmission oil needs to be preheated to about 50 ℃, and then the gear lever is placed in the parking gear after staying in each gear for 2 seconds. At this time, the normal oil level of the dipstick should be between the high and low lines. If it is not enough, the lubricating oil of the same quality should be added in time.

4、正确更换变速箱油。一般在更换自动变速箱油时大都是卸下自动变速箱油底的螺丝来漏掉旧机油再加入新机油，但这样大约只能换上30%的新油，而还有70%的旧油仍残留在变速箱内。如果以拆卸油底壳的方式进行换润滑油，则可达到70%的换油率，这样其实就已经能确保变速箱的健康了。但目前较好的换润滑油方法是动态换油，采用专用的变速箱清洗设备，在变速箱运转的过程中，将旧油充分循环、排放干净后再加入新的变速箱油，从而使换油率高达90%以上。

4. Replace the transmission oil correctly. Generally, when changing the automatic transmission oil, most of them remove the screws at the oil bottom of the automatic transmission to leak the old oil and then add new oil, but in this way, only about 30% of the new oil can be replaced, and 70% of the old oil is still left in the transmission. If the lubricating oil is changed by removing the oil pan, the oil change rate of 70% can be achieved, which can actually ensure the health of the transmission. However, at present, the better method of changing lubricating oil is dynamic oil change. Special gearbox cleaning equipment is adopted. In the process of gearbox operation, the old oil is fully circulated and drained, and then new gearbox oil is added, so that the oil change rate is up to more than 90%.