Hello guys, I leave now and then my old station wagon through the washing machine so that it is partly clean again. Now I noticed always when I drive through the washing machine and it rains in the next few days then the water is wonderful from the windshield. In light rain I do not have to turn on the windscreen wipers at all and in the early morning is almost no dew water on the disk. This effect unfortunately only lasts a few days and then the thing is again wi e earlier. Have I looked around what there is on the market in this regard. Result: There is enough medium for this but which one is really good also from the price / performance ratio? Maybe someone already has experiences in this field and can write them in here… greet The Jag