Hello everyone! The car is the F18 BMW 523LI of 11 years. When I bought someone else’s car, I also asked the owner that he had changed the gearbox oil, and it was not that he did not believe that the car could not be ambiguous. At present, the mileage of my hand has reached more than 160000 kilometers. I can’t imagine if the gearbox oil hasn’t been changed. In the past two days, I went to a good friend’s auto repair shop for a comprehensive physical examination, and the car condition board was in normal use, and there was no problem with other oil and water, so I replaced the 7-liter Castrol extreme protection, which was supposed to add 6.5 liters, but later the oil was not full after the fire. I don’t know if it was the reason for the delay, so the master said there was no problem, and the machine didn’t call the police, so I didn’t take care of it. Today, this assignment will be written in detail. I will give some experience to the old BMW owners. You are also welcome to leave a message below to talk about your own car experience. Let’s get back to today’s maintenance project and the replacement of gearbox oil. A friend’s home in the local county seat can also be regarded as a well-known car beauty maintenance chain, with only transmission oil and equipment called Perede. although I have never heard of it, my friend said that the oil is very good and there is no other oil at home. Later, Baidu said that it was probably OK to import canned oil from Germany, and it could only be felt in time. Next, I would like to share with you the whole process of changing gearbox oil today, and give some reference to friends who are ready to change or hesitate. The car is an 11-year 523LI, and the model should be the same model as that of the watermelon moderator. when it comes to the place where it should be checked, there is no ambiguity. 13 bottles of gearbox oil are left with 0.3 liters, and the oil pan is also sent. After using the circulation machine to change oil, it is said on the Internet that the circulation machine changes oil and hurts the car. In my humble opinion, because gravity should only need three or four liters to change oil. There are still a lot of original oil, the change is not complete, and then oil and water is not necessarily the same variety, blending together should not be very good, personal advice or gravity change is better. The following pictures and texts to share with you today’s maintenance results.