08-03-2007, 07:11 AM
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#1
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Registered User
Join Date: May 2007
Location: Puget Sound
Posts: 176
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Glass Cleaner Recs?
My windshield is spotted with what looks like mineral deposits. My standard industrial-strength glass cleaner doesn't do a thing for it. Do I need a glass-stripper or something else? Thanks.
__________________
- Jim
2000 Boxster S, Speed Yellow, Michelin AS/3 tires, 60,000 miles...
... and climbing.
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08-03-2007, 07:55 AM
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#2
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Registered User
Join Date: Jul 2004
Location: Houston, Texas
Posts: 7,243
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You may be able to clay bar it and get the spots off. Are you sure you're not seeing pitting from sand and debris hitting your windshield? Mine had awful pitting in it before I swapped it out earlier this year.
Another thing you can try, tested first in an inconspicous corner (lower passenger side by base of windshield would be a good spot), would be "barkeeper's best friend," found in the grocery store isle in a "comet" style container.
This stuff is amazing. It polishes glass like no other product. Works great on wine glasses and the windows in your house too.
However, I must say that I've never tried it on a windshield and therefore you should be extremely cautious to test it before you haul off and do a big spot and find out it caused more damage than good.
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08-03-2007, 08:30 AM
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#3
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Registered User
Join Date: Apr 2006
Location: Dallas, Tx
Posts: 730
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Clay bar is a good idea. I used Klasse all-in-one on my windshield last weekend and it took off some deposits that Stoner Invisible Glass missed. If you already have Klasse it's worth a try but otherwise the clay bar is much less expensive.
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2003 Boxster - Sold but not forgotten
Last edited by timothy; 08-03-2007 at 08:32 AM.
Reason: fixed spelling
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08-03-2007, 09:14 AM
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#4
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Registered User
Join Date: May 2007
Location: Puget Sound
Posts: 176
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Thanks, guys. I'll try the clay bar first as a safe method and if it's still a problem, try the barkeeper's best friend on a small spot on my wife's side of the windshield. 
__________________
- Jim
2000 Boxster S, Speed Yellow, Michelin AS/3 tires, 60,000 miles...
... and climbing.
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08-03-2007, 10:33 AM
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#5
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Registered User
Join Date: May 2006
Location: Annapolis Maryland
Posts: 1,528
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Most often (if they're deposits and not etchings) vinegar will break them down, no problem.
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08-04-2007, 03:30 AM
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#6
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Registered User
Join Date: Jul 2006
Location: MN
Posts: 54
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Razor blade
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08-04-2007, 11:12 AM
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#7
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Registered User
Join Date: Sep 2006
Location: California
Posts: 713
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Try Brasso polish, followed up with some Stoner Invisible Glass...
__________________
http://farm4.static.flickr.com/3420/...90927559_o.jpg
Some stuff for sale: M030 S 24mm front sway bar, M030 base 19.6mm rear sway bar, 996 GT3 OEM Porsche Motorsport front strut mounts monoball "camber plates"
WTB: looking for some 5-7mm spacers with extended bolts
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08-04-2007, 11:54 AM
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#8
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Porsche "Purist"
Join Date: Aug 2003
Location: Wisconsin
Posts: 2,123
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From www.PCA.org and John Paterek the ultimate authority on this subject.
We have foumd Wurth Zebra finish which was introduced as a lubricant for thier clay paint cleaneris incredible for removing bugs water spots and film on glass.It may not Google but we have won Restoration of the year PCA parede 2 times Pebble beach, Louis Vuitton, Amelia Island ETC using tjis product. I am a firm believer in it,it also removes hard water spotting and streaks.
John Paterek - PCA WebSite - 4/18/2005
__________________
1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster original owner. I installed used motor at 89k.
1987 924S. 2002 996TT. PST-2
Owned and repaired Porsches since 1974. Porsche: It's not driving, it's therapy.
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08-04-2007, 01:00 PM
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#9
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Guest
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Quote:
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Originally Posted by Paul
From www.PCA.org and John Paterek the ultimate authority on this subject.
We have foumd Wurth Zebra finish which was introduced as a lubricant for thier clay paint cleaneris incredible for removing bugs water spots and film on glass.It may not Google but we have won Restoration of the year PCA parede 2 times Pebble beach, Louis Vuitton, Amelia Island ETC using tjis product. I am a firm believer in it,it also removes hard water spotting and streaks.
John Paterek - PCA WebSite - 4/18/2005 |
Good find, Paul. Here is a link to the Wurth Zebra Finish:
http://www.wurthusa.com/project/en/leftnavi/catalog/product.php?path=06.0420.jpg
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08-04-2007, 01:28 PM
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#10
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Porsche "Purist"
Join Date: Aug 2003
Location: Wisconsin
Posts: 2,123
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Thanks for the link, I was looking for it!!
__________________
1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster original owner. I installed used motor at 89k.
1987 924S. 2002 996TT. PST-2
Owned and repaired Porsches since 1974. Porsche: It's not driving, it's therapy.
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08-14-2007, 06:47 AM
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#11
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Registered User
Join Date: May 2007
Location: Puget Sound
Posts: 176
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Thanks, all. I ended up trying vinegar first without much luck. Then I tried RandallNeighbour's suggestion for the Barkeeper's Best Friend. Using a non-scratch kitchen pad, I scrubbed lightly, but vigorously for a long time, then wiped it clean, then used the vinegar again. That did a pretty good job. It's not perfect, but it's a lot better. If I decide to go for perfect, I'll give the Wurth Zebra finish a try. 
__________________
- Jim
2000 Boxster S, Speed Yellow, Michelin AS/3 tires, 60,000 miles...
... and climbing.
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