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G

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Discussion Starter · #1 ·
I used a Rain-X clone called Rain Relief by Prestone
on my windshield and it does bead the raindrops so
they fly off once the car's moving above 65 km/h
(40 mph) or so.

It's really entertaining: You can see them tracing
sperm-like trails that follow the air flow across
the car -- and you realize that the ridge down the
middle of the hood isn't merely decorative but has
an aerodynamic function as well. :cool:

Problem #1: For the first week or two after I applied
the stuff, the wipers stopped sweeping smoothly
and started hopping across the windshield. :(
Is there a way to avoid or mitigate this?

Problem #2: Someone in an earlier post said products
of this kind create a silicon buildup on the windows
that makes them look dirty and is difficult to remove.
Is this true? Rain-X itself claims on the bottle that
there's no danger of a buildup forming. :confused:

If there isn't a reliable fix for these two problems,
I'm prepared to chuck the stuff out and chalk it up
to experience. :)
 

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I had the skipping problem with rain-x too. I cleaned off my wiper blades with rubbing alcohol and that helped. It also helps to use the wipers less, when the windows are really drenched. Washing the car (and windshield) weekly helps. It still skips sometimes which kinda pisses me off, but I'll keep using it.
I'm thinking of changing my wiper blades to Teflon blades, they glide over anything.

As for the silicon buildup, I don't think you have much to worry about, rain-x seems to fade over time. It becomes less effective after a few washings, so I'm assuming that the product slowly washes out.
I only apply it after thoroughly washing the car, to prevent embedding dirt onto the windshield.
 

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I used Rain-X on my old car...but never again!

Granted, I hardly cleaned my old car (it was a '94 Escort wagon...can you blame me?), but after a year or two of using Rain-X, I had trouble with my windshield fogging up all the time.

I've had to use my RSX's wipers quite a bit (I live in FL), and I have found that cleaning the wipers and windows (no tints) with rubbing alcohol works really well.
 

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rin-x

I have used Rain-X brand for ~25 yrs. When the wipers are used, there is a mist of very small beads of water left in its wake but dissapates rapidly. That is when I do use the wipers <35 mph in a light rain where the water is not heavy enoght to collect in bigger beads. I need to reapply every 2 months. My older 87 with 200k did not have a problem with 'accumulation'. That windshield did 'mist' up a lttle quicker but that was due to the sandblasting of the glass due to highway miles exposure leaving a pitted suface.
My wife can not stand to see the water beads but I see around the beads & focus on the scenery. I can not stand to see the wipers going back & forth now after so many years without that distraction.
 
G

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Discussion Starter · #9 ·
Thanks, guys and gal, :) for the feedback.

I guess it's safe to use the stuff sparingly,
keeping the wipers clean with rubbing
alcohol -- that's a useful tip, FrostyBC
and Gator!

Capbill, I'm getting used to looking around
the raindrops, too, although with the torrential
showers we've been having lately, there's been
no avoiding using the wipers -- but I try to set
them at a low-intermittent speed.
 

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do you use rain x on all the windows??

I was thinkin about applying it to just the windows that don't have wipers on them... this way i don't run into any problems. My father who tried rain-x told me to avoid it because of wiper problems also...


but i suppose if you make the windows go up and down that might mess it up too. Guess i am left with just using it on the windows that can't go up and down and have no wipers...
 

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Yes I use it on all the extreior glass as well as the rear view mirrors. It was originally made for aircraft windshields so I do put it on my headlites.
 

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i have only used the bottle of liquid.
 

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Yeah, the liquid's the best, the wipes suck. I fill my old liquid bottle from the spray bottle, since that's all I can get around here anymore.

As far as buildup goes ... well, that's kind of how it functions; it builds up a layer of silicone over your windscreen.
The wipers skip because the silicone builds up on them in different places, and then hits the glass, and suddenly grabs and releases. Cleaning them off with rubbing alcohol removes the silicone buildup.
In the same vein, you won't *notice* any buildup, but if you want to be anal and clean stuff off, you can wipe your windshield down with rubbing alchol.

The best way that I've found to apply it (and I live in Oregon, folks -- it rains here 9 months out of the year!) is to wash your car, and then apply the Rain-X with a paper towel. Wait for it to 'glaze', and then apply another coat with the paper towel without wiping the original off. While you're waiting for it to glaze a second time, fill a bucket with water, and pour a little ammonia in. With an old washcloth, wash the windshield down. Then buff it dry with a big, old cotton bath towel.
 

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Oh, and as for fogging ... well, what silicone does is that it makes it easier for water to bead. So in an situation where the air's at dewpoint, it's very easy for water to bead on your windshield and form a 'fog'.

*this is why you should never ever ever use RainX on mirrors*

There's not much you can do about this except to wait until your car warms up and heats the windshield enough for the fog to lift off of it.

For me, where I live, the benefits of the rain-x outweigh this one slight negative.
 
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