>rain x is bad to use with any blade(it dries out the rubber)
Unless you get the Rain-X fluid (it contains methyl alcohol) on the rubber how can it dry out the rubber? The methanol evaporates. It leaves behind a coating that repels most stuff so I'm not sure what is getting on the blades to dry it out. Can you elaborate? I've been using it for at least 15 years w/ no problems.