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Old 17th April 2008, 15:42   #46
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Yesterday I have tried prill liquid with lemon to remove hard water mark from windshield, not a big success, but i feel a little improvement.
Now i have to try with vinegar. I will try sometime this weekend.
What about contacting 3M people or windshield experts?
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Old 17th April 2008, 20:55   #47
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I had success with used Scotchbite pad and liquid kitchen soap. 5mins , Sparkling clean.
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Old 17th April 2008, 21:39   #48
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Quote:
Originally Posted by Sutra View Post
I had success with used Scotchbite pad and liquid kitchen soap. 5mins , Sparkling clean.
Scotchbite pad? Wouldnt that create scratches on the glass?

Nirmal
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Old 18th April 2008, 21:23   #49
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I had similar concerns.

The green ones are soft enough and do not scratch the glass.

Have you seen borosil clear lemon glasses used at home ever getting scratched with Scotchbite pad.

To be on safer side I used a worn pad, it’s equally effective.

Try this with warm water.
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Old 18th April 2008, 21:47   #50
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Hard water drying on the windshield will leave marks which cannot be cleaned with Colin, Prill or whatever. These marks will be gone as time pass by, when your car undergo several washes... But while washing the windshield, always take care to wipe off extra water with a cotton. And do not fill your wiper tank with tap water if water in your area is hard. Use water from a reverse osmosis filter or Aquafina
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Old 18th May 2008, 16:55   #51
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Default Hard water mark gone from windshiled

Last week I had taken my vehicle to Vijay(GM Bangalore) showed them the hard water mark. I can't believe It's hardly less than 5 minute job.
First they sprayed soap solution to windshield. Then they rubbed the windshield carefully with some glass cleaning clay mix. After this washed the windshield, my god all the marks are gone.
How much i struggled earlier

Asked them the details of the clay mix, they told me they are getting this from 3M.
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Old 19th May 2008, 21:46   #52
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Can you please find out the details of the clay mix? It will be off great help.
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Old 20th May 2008, 10:30   #53
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Quote:
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Can you please find out the details of the clay mix? It will be off great help.
I had asked them the details. Since they have a tie up with 3M, they are getting this clay mix from 3M. They don't know outside where we can get that. He asked me to check-up with some accessories shop. I have tried some shops in bangalore, but no use.
Can you ask the 3M guys at Mumbai? Hope they might be having some solutions for this.
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Old 22nd May 2008, 17:53   #54
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Try alcohol, i use it to remove water stains from my bathroom mirror.
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Old 22nd May 2008, 19:30   #55
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Quote:
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Can you please find out the details of the clay mix? It will be off great help.
Assuming that it is an ultrafine powder, perhaps Brasso might do?
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Old 22nd May 2008, 20:56   #56
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I use stainless steel wool (used to clean kitchen utensils) to clean water stains from glass. It will not create any mark, nor it require any other cleaning liquids. Just make it wet and scrub. If you guys are in doubt try it on other glass and then on to the car. I was doing this in Bangalore. In kochi as we have soft water, steel wool is limited to aquarium glass. This is easier/ faster than Scotch-bite.
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Old 23rd May 2008, 20:04   #57
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hello kochicar,

Wouldnt really advise to use steel wool on glass. For naked eyes the scratches caused might not be visible, but this is enough to cause troubles like glare during night driving due to unwanted reflections through these marks, water marks even after using wiper during rains etc.
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Old 25th May 2008, 14:26   #58
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Hard water stains are bit hard to get rid of.
I see that a lot here in chennai.

In my native cochin its not a problem, what stains ?

If glass cleaners like colin does not help,
try disk washing liquid (be careful not to get that on to the paint)
dampen the glass and rub the liquid (sponge/ cloth/ paper)

If this does not help, use tooth paste (I kid you not)
tooth paste contains a mild abrasive agent.

If that does not help, time for the big guns...
"Rubbing compound" (water based recommended) please don't use too much else you risk making the glass hazy.
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Old 25th May 2008, 17:14   #59
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Tooth paste has long been recommended for polishing small scratches out of glass.

I've tried it on sunglasses, and I guess it requires several hundred times more patience than I have!
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Old 25th May 2008, 17:52   #60
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The opaque type, chalk based tooth pastes would work better than the gels.
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