How to get rid of hard water spots on windshield??? - Mercedes-Benz Forum

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post #1 of 11 (permalink) Old 12-01-2007, 10:30 AM Thread Starter
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Unhappy How to get rid of hard water spots on windshield???

HELP!! Been trying to get rid of rain spots on windshield but had no luck.
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post #2 of 11 (permalink) Old 12-01-2007, 11:41 AM
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Waterspots

Wash it, shami it, windex then apply rainx, thats what i do and it works everytime.

Robert McCall
Triple Black 1997 SL 500 Sport
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post #3 of 11 (permalink) Old 12-01-2007, 07:18 PM
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If that wont do it, Zaino makes a pretty good glass polish, used it on my old Corvette and got 90% of the spots off.
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post #4 of 11 (permalink) Old 12-02-2007, 03:06 PM
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I've been told by my indy that very fine steel wool get's rid of these marks, without scratches.
Don't use a lot of force on it, take your time and only use this on glass, not on paint.

This also helped the function of the automatic wiper sensor. (If it's available on a R129)

I believe those marks are calcium, so U can also try products which U clean the bathtub with.
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post #5 of 11 (permalink) Old 12-04-2007, 09:34 AM
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Originally Posted by deepdish View Post
HELP!! Been trying to get rid of rain spots on windshield but had no luck.
Spray Clay

DP Restorer

1987 300SDL with 2-Tank WVO system
1991 560SEC
1997 SL500 Sport
1967 Impala SS Convertible
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post #6 of 11 (permalink) Old 12-04-2007, 11:18 AM
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spots on windshield

Although hard to find as it hasn't been manufactured for ~5 years, I've been able to buy Bon-Ami ( CAKE ) on e-Bay. As I'm probably biased because I used this on my 1st cars (no doubt I "borrowed" my Dad's) I find that there is nothing better. Just a thought.........
Ron
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post #7 of 11 (permalink) Old 01-13-2008, 06:36 PM
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why not

my car dealer (David) to me to use a cut a apple in half and use it. so im going to try it let you know. the spots on my windon is real bad. and i just replace my windsheild like two mons ago.

DOES TIME RUN YOU OR DO YOU RUN TIME. LZ
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post #8 of 11 (permalink) Old 01-13-2008, 07:12 PM
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The apple method does work...just takes too long. I used very fine steel wool and a little dish soap....with light pressure, spots came right off with no scratching.
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post #9 of 11 (permalink) Old 01-14-2008, 03:26 PM
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Quote:
Originally Posted by Jomzo View Post
I've been told by my indy that very fine steel wool get's rid of these marks, without scratches.
Correct. Fine steel wool & windex, we used this at the detail shop for years.

That, or acid wash the car if its got spots all over the vehicle.
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post #10 of 11 (permalink) Old 01-14-2008, 09:08 PM
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for recent/new water spots the above methods do work if your gentle and very patient.. sometime the acid in the water actually etches the glass and it looks like spots but is a small crevice in the glass.. that's why rain x works temporarily by filling the hole.. if it is bad enough to annoy you or pitted from highway driving replacing the windshield is the best bet..

regards.
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