Portege_RAV4 said:
Fatboy said:
Tried the wet wipes, but they are too wet for glass and you will end up with streaks on your windshield after it drys. You really need some purpose designed glass cleaning fluid and importantly a clean cloth.
thanks for the info.
so what kind of glass cleaning are you using to elimanate or improve the visibility during rain/snow.
It isn't necessary to clean the glass if you want to
eliminate visibility. Try closing your eyes. :wink:
Improving visibility, on the other hand...
I tried Rain-X on my Prizm and found the same "haze" problem described by Marcutio. This haze is most commonly caused by what I'll call "road grease." You
cannot use windshield wiper fluid to clean this. You must physically get out and clean the window with glass cleaner and towels. The degraded visibility problem is that
any blemish/nick/dirt/grease will refract light and diminish visibility.
Here are a few visibility tips, however:
INSIDE:
1) Reach straight out in front of you from the driver's seat and rub a very small circle with one of your knuckles. If there's any build-up on the glass, the circle will seem clearer by comparison. Frequently you don't notice the build up until there's a point of reference. This faint "fogginess" can frequently be detected within a few days after cleaning, or maybe weeks, depending on the air quality where you live. (Do this when the window is dry. If it's fogged at all, don't bother as you'll just leave water-streaks)
OUTSIDE:
2) You must use a good glass cleaner to clean the windshield. After you've cleaned it, clean it once more...you
never get it all! What you're really after isn't dirt. It's petroleum deposits from the road. The windshield wipers smear this every swipe and give you that haze.
3) You
must clean the windshield wipers, too. Use clean towels and the glass cleaner. Imagine cleaning a plate all sparkly-shiny and then wiping it dry with a buttery knife. This is the same as cleaning the windshield, but not the wipers.
4) Replace the wipers. Tip 3 helps a lot, but no substitute for wipers with good, even contact.
5) Every time you drive your windshield is bombarded with debris. If a grain of sand is coming at you 50MPH, and you're moving at it at 70MPH, that's a 120MPH collision. After 100k miles, you've effectively sand-blasted your windshield! First, this creates an effect much like a million little prisms, each bending and separating and distorting the light coming through. This is most noticeable when there is a very direct, very strong light source like a setting sun or a pair of high-beams. Second, these little prisms act like little cups for all that road-grease, which is why you never quite seem to be able to get the glass clean. Of course, there's not much you can do about this, except replace the windshield if/when you find it unbearable.
As far as the Rain-X type products go, you might as well try it yourself. It's not like it's expensive. But remember that all 5 points above will affect your vision, Rain-X or not. In my case, it seemed slightly better for a few days, but then went away. It wasn't worth the effort. But I also have 200k miles, and my windshield is very badly nicked. I think that played a large part in the product's ineffectiveness.
Todd