Rain-X

I am half convinced by Rain-X. It works really well on body glass, mirrors and headlights. But... it causes a problem when used on windscreens. Is this problem a real problem or not? Hard to say. For the most part, a properly Rain-X treated windscreen will simply shrug off water. In light rain you simply don't need the wipers at all. But as soon as you turn them on, you get very fine beads of water all over the screen, and this is really not helpful.