Three years for me. It works fine and has not hurt the plastic at all, still crystal clear - stock shield. Call the Mythbusters.MotorcycleBoy said:I have been using Rain-X car wax on my windshield for almost 4 years without any kind of issue.
It is a sheet of plastic that gets sandblasted every time you ride. How long should it last? What exactly did the Windex do to the windshield?Art H. said:I have a friend that use to use Windex on his windshield. I sugested he not use it, that it might damage it. He said he's used it for years with no problem. Well it took years, but it did ruin his windshield. You pays your money and you takes your chances.
I think the stuff you are thinking about is made by 3M. They have a cleaner and polish that was marked as "#2" and "#4" (if I remember right) in yester years and came in blue plastic squeeze bottles. The following link shows their current packaging and names:tom smith said:I am reading the replies and xomewhere along the line it shifted from Rain-x windshield treatment to Rain-x wax. That's two differtent products. In no way should you use Rain-x windshield treatment on plastic windshield. They have or had a product for plastic but primarily directed at the aircraft industry, used it on our corporate jet windscreens. If you want it go visit your local airport parts supplier. As I recall it came in a blue squeese bottle. Personally I use a Product called Prist acrylic, plastic and glass cleaner. Can't go wrong works on anything.