Hi, my first post! I'm a new Audi Q7 owner having recently purchased a 2016 S-Line. It is a great car and pulls our big caravan like a train. The car is on 80k miles and I have just done an Oil and filter change but wondered if the gearbox oil needs changing too? Gear change is smooth but when cold it can be a little bit hit and miss where it changes up and then down quickly. Having never owned an Audi before (or an Auto Gearbox) I'm not sure if this is normal or a sign that the gearbox oil shou