Hello, since I have had bad experiences with another car where parts were allegedly installed, but which were never installed, I would now like to make an appointment for the 10t km check but on the condition that I can be present in the workshop and watch. Do I have the right to do so? How long does this take about, and what is done? May I insist on bringing my own oil or do I lose the guarantee? With what costs do I have to calculate approximately And what tricks do I have to reckon with, where is this being claimed and that has to be exchanged? Thanks and greeting Cindy