Please can someone explain this. We were all driving back from a show a little while back and some of the guys in the Rsoc weren't using there wipers even though it was torrential rain! I asked why they not using them and no one had a straight answer and one guy said I don't use my washers in case the screen wash rots the window rubbers. I was gobsmacked I've never heard anything like it in my life. What are these people on lol?