Hello, so in the forum it is often reported that one should not only change the gear oil, but also make a flushing. In addition, some talk about changing the servo cover. Well, my automatic is after 13 years and 223,000 km no longer like on the first day and my workshop and I agree that one can exchange the oil once. Now I have read that one can not change the filter and therefore also makes sense a flushing. But how should one wash there? Must happen contrary to the normal direction. How does this happen??? And at all: Why rinse? Ultimately, the abrasion, which is not let off, collects in the filter. And what exactly does a servo cover do? Volvo does not know this and my workshop, which is really good, does not say anything. The googles however sometimes. We never bring such an old car to new state anyway. It is only about receiving. Greeting Knut