Hello, sometimes a completely different topic. Have my stepi completely incl. all panes Nano Sealing. I can only recommend Nano Sealing. Especially in the current weather, if you are on the highway e.g. and a driving vehicle sprays the snow mud on the windshield, as fast as you have clear view again is sensational. In case of rain from approx. 60 KMH you do not need any wipers anymore, also the salt dirt from the paint goes off so, if If you want to invest a bit of money and if you want to be even more traffic-proof due to better visibility in rain and snow-mush, I can only recommend this. Even headlight light in the dark of incoming cars does not dazzle in cold weather, because you do not have any lubricating veil from the dirt on the windshield due to the nano-sealing. Polishing because I polished my car minimum 2 times a year. I have 3 years warranty on the nano seal, for this the car must be checked 1 times a year, costs around 40 € incl. all rework to ensure the effectivity of the seal for at least 3 years.