A6 LL Service nicht einstellbar | Posts 16+

You need to proceed step by step. First, increase the oil quality, then save. Then, increase the mileage, save, then increase the number of days, save, and so on, until you reach your desired settings. However, if you want to do something good for your engine, it's best to keep the intervals at fixed values, and if necessary, you can slightly extend them (using better oil).

I switched from liquid to solid form.