Hello, I would like to treat my VW Touareg something good. Was at my local VW service.. Asked there for a preparation. He meant what really good to find in matter preparation is difficult. Well my Touareg is only three years old. But you can see that I am quite a lot in the washing machine. What preparation is there for the outside the best? Is ne nanosealing advisable? And inside? Have everything in leather and piano lacquer or piano lacquer optics in black. Car has never seen a cigarette before! When you suck out dust is back relatively quickly. How can you get the dust out again? Because I find the dust is only now since the third year there. In black you can see everything….. is a ozone treatment advisable? What can cost? What is more important to me that it is good instead of cheap…, Would I be happy about some good tips!