Uneek
Super Moderator
WTS said:Hi,
What's the purpose of adding Rain-X and what Rain-X product would you be referring to.
What is the best windshield washer fluid to use.
Rain-X is a glass treatment solution. What Rain-X does is it seals up the pores on the glass, making it super slick and smooth. After applying Rain-X on your windows, water will bead off the glass and will not sheet or stay on it. I don't need the wipers at speeds above 15-20mph with a freshly treated Rain-X windshield. After some dirt sticks on it, then I need more speed. Even at it's dirtiest and without washing, freeway speeds, I don't need wipers. However, I don't think Rain-X is really needed on the front side windows, side mirrors and windshield, because the 4th gen 4R already has rain repellant treatment on it.
http://www.rainx.com/
Goto products>windsheild treatments>original glass treatment.