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#3128757 - 09/18/13 03:49 PM Getting off hard water spots on windows?
morepwr Offline


Registered: 01/17/12
Posts: 1726
Loc: ventura, ca
I recently bought a truck that had a camper shell on it and when I took it off, the rear window is a mess of hard water spots. I tried all the different window cleaners and some quick detail spray but they are still there. I have never had spots this bad on a window and was hoping somebody might have a good cleaner or polish that would work.

I thought about maybe a paint cleaner type wax might work? The last thing I want to do is scratch it up!

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#3128763 - 09/18/13 03:53 PM Re: Getting off hard water spots on windows? [Re: morepwr]
SatinSilver Offline


Registered: 01/24/08
Posts: 7971
Loc: Ohio
This stuff works very well especially with a buffer:

www.duragloss.com , click on glass cleaners. The Nu Glass works very well!
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2012 Toyota Camry 68k-PUP 5w20,OEM filter, RT43s.
2005 Toyota Matrix 122k miles - MC 5w30 syn-blend, Omnicraft oil filter. Nokian eNTYRES.

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#3128787 - 09/18/13 04:19 PM Re: Getting off hard water spots on windows? [Re: morepwr]
dparm Offline


Registered: 04/19/10
Posts: 13344
Loc: Chicago, IL
White vinegar solution and/or ammonia solution should cut through it.
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#3128841 - 09/18/13 05:12 PM Re: Getting off hard water spots on windows? [Re: morepwr]
nitehawk55 Offline


Registered: 04/01/10
Posts: 1084
Loc: Ontario , Canada
Yes , white vinegar solution , about 5-1 or stronger if really bad . Newspaper works best with vinegar too but paper towel or terry cloth is OK too .
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05 Ford Five Hundred AWD 3.0 DOHC V6 CVT tranny

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#3128930 - 09/18/13 06:48 PM Re: Getting off hard water spots on windows? [Re: morepwr]
Falken Offline


Registered: 07/30/12
Posts: 2630
Loc: Montreal, QC, Canada
A ball of dry newspaper works well.
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Current Fill: Formula 1 Synthetic 5W20 SN, Wix 57356 Oil Filter, ATF DW-1

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#3129126 - 09/18/13 10:35 PM Re: Getting off hard water spots on windows? [Re: morepwr]
The Critic Offline


Registered: 08/30/04
Posts: 19208
Loc: Walnut Creek, CA
This should work great:

http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=3125820#Post3125820

CarPro CeriGlass- it contains Cerium Oxide. I have some coming and will be testing it on my dad's windshield later this month.
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#3129398 - 09/19/13 09:16 AM Re: Getting off hard water spots on windows? [Re: morepwr]
morepwr Offline


Registered: 01/17/12
Posts: 1726
Loc: ventura, ca
Thank you everyone! I did the vinegar and water idea since I had what I needed at home and it took a little scrubbing, but worked great!

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#3129983 - 09/19/13 07:45 PM Re: Getting off hard water spots on windows? [Re: morepwr]
dparm Offline


Registered: 04/19/10
Posts: 13344
Loc: Chicago, IL
Originally Posted By: morepwr
Thank you everyone! I did the vinegar and water idea since I had what I needed at home and it took a little scrubbing, but worked great!



Vinegar is a good multi-purpose cleaner. I have used it straight to cut through some really nasty stuff on windows before.
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2017 Chevrolet Corvette Grand Sport

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#3133766 - 09/23/13 07:04 PM Re: Getting off hard water spots on windows? [Re: morepwr]
97prizm Offline


Registered: 05/25/05
Posts: 665
Loc: USA

Hands down Glass Science glass scrub. It gets everything off, and leaves the windshield really clean. Glass Science
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1997 Geo Prizm
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#3134017 - 09/24/13 01:03 AM Re: Getting off hard water spots on windows? [Re: morepwr]
qwertydude Offline


Registered: 05/15/08
Posts: 635
Loc: Norwalk, CA not CT
One of the best things for removing the most stubborn stains on glass is steel wool, get the extra fine stuff 0000. Combine steel wool and vinegar and you'll get all hard water spots and bonded contaminants off guaranteed.

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