Hello, my wife will get a new car in the next few months. The Kamiq TSI with 110 hp. This is then the 4th Skoda within 23 years. However, the 1st three-cylinder. The problem with direct injection with the coking of the valves is known. Do you have a tip for me in terms of prevention by additives? Or is this all over, especially with the TSI engines? Greeting Frank