Stubborn Water spots on Windshield and Side mirrors - HELP - Toyota RAV4 Forums
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#1 (permalink) Old 11-11-2012, 12:26 AM
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Angry Stubborn Water spots on Windshield and Side mirrors - HELP

HI I have a huge problem.

All over my windshield and one side of the car, I got hard water spots from a sprinkler my mother in law used to place on our yard, soaking one side of my car and the windshield. I didn't think anything of it but now I have a lot of hard water spots all over my glass. Its to the point where its diffulct to see at night. I tried vinegar and that didn't work. Steel wool, extra fine but it seemed like it left micro scratches.

Finally I bought Mothers California Gold Water Spot remover, excited for it to work. However the spots are still there!!

The glass feels smooth but the effing spots ARE.STILL.THERE.

Any helpful suggestions would be appreciated..I have no access to a buffing machine so easy by hand techniques please.

Bout ready to try Bar Keepers friend on the glass....
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#2 (permalink) Old 11-11-2012, 01:12 AM
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I have the exact same problem from the automatic sprinklers at my workplace. Also tried vinegar, and it didn't seem to do much. I wonder if a dilution of muriatic acid might work?

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#3 (permalink) Old 11-11-2012, 05:19 AM
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Have you guys tried claying?

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#4 (permalink) Old 11-11-2012, 08:37 AM
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Bar Keepers Friend should work on the glass but it may take more than one try. Here's some info on the paint. Scroll down to the second post (red car) as that's more what you're dealing with but it's all a good read. In short you'll need a chemical paint cleaner at the minimum or a machine polish with compound at the maximum.

How To Remove Sprinkler Water Spots - Auto Geek Online Auto Detailing Forum

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#5 (permalink) Old 11-11-2012, 08:51 AM
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That is why in the Netherlands they remove as much calcium from the drinking water as possible, making it a lot softer.
Done nationwide for years already.

You also could try and getting an reverse osmosis system to provide you with the clearest (and least contaminated) water possible and use that for washing your car, and so on. Drinking osmosis water is safe, but i am sure you will not like it (due to most people being used to drinking water which has all kinds of things mixed in). A reverse osmosis system can be acquired for about 50 dollar (cheapest one, without container).
Greetz

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#6 (permalink) Old 11-11-2012, 01:11 PM
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my main concern is the glass. The car is white so you don't notice it onthe paint. Will claying scratch the glass?
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#7 (permalink) Old 11-11-2012, 04:13 PM
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No it will not but if it doesn't work go with the BarKeep's Friend. I've used it for this very purpose and it makes a mess but it works. If the spots are etched clay won't touch them.

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#8 (permalink) Old 11-11-2012, 04:59 PM
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I would try Lime Away, C-L-R or phosphoric acid.

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#9 (permalink) Old 11-11-2012, 05:58 PM
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I used SoftScrub on some very stubborn window water stains which my selling dealer failed to clean off before delivering the car and it did the job. Ordinary window cleaner wouldn't touch them. I tried the SoftScrub on a small part of a rear side window to make certain that it wouldn't damage the glass before I used it on the rest of the windows.

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Last edited by Blogson; 11-12-2012 at 11:40 PM.
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#10 (permalink) Old 11-11-2012, 08:25 PM
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Invisable glass - No dice.

bar keepers friend - This actually did work. I was so happy I started doing the whole passanger side glass........only to see MICRO SCRATCHES when it dried. Applied with a microfiber cloth. What gives???? I don't see anywhere anybody mentioning that this crap scartches glass. I dampened the cloth, put the stuff on there. Wet it a bit to make a paste then went at it. I didn't press hard but I didn't press softly either...
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