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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Wash, Wax, Detailing and Cosmetic protection/repairs > Hard Water



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      08-14-2012, 08:45 AM   #1
ngstsh
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Hard Water

I have hard water spots on the drivers side of my car from a in ground sprinkler system. I have washed my car but can't remove the spots from my car and glass. What would work best to clean the hard water spots off and not damage my car?
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      08-14-2012, 08:49 AM   #2
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I get these every once in a while. There are products that can remove them, but I usually just take some clay to them or wait till I polish the car
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      08-14-2012, 01:55 PM   #3
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You could use some wax but it will take a lot of elbow grease to get them out. I used some cleaner wax and a porter cable car buffer and mine came out pretty good but afterwards, I had swirls which I had to remove also.
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      08-14-2012, 03:26 PM   #4
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WHITE vinegar, usually mixed about 50/50 with water. Spray on, let sit a bit, wipe off. You should probably apply your favorite wax/sealant afterwards.
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      08-14-2012, 09:30 PM   #5
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had some really bad water spots on my hood, took my car to get clayed and polished once. Didnt come out, had to do a 3 step polish and wax to get it out
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      08-14-2012, 11:16 PM   #6
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Quote:
Originally Posted by BKap08 View Post
had some really bad water spots on my hood, took my car to get clayed and polished once. Didnt come out, had to do a 3 step polish and wax to get it out
Yeah, clay takes it out of glass and some of the spots on the paint, but after that out comes the polish
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      08-15-2012, 02:01 PM   #7
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I add a couple spoonfuls of borax to my wash bucket each time, it helps soften the water. Just have to make sure it dissolves well so you don't get any clumps. I like to use HOT water out of the sink, add the borax, and let it sit for a few minutes to dissolve.

Ninja edit: This won't get the current spots off the car, but will help eliminate the problem in the future
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      08-16-2012, 03:41 AM   #8
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Removing ‘Water spots’
Always start by using the least abrasive product first
1. Use a paint surface cleaner (Z-PC Fusion Dual Action Paint Cleaner or Duragloss 501)

2. Try to dissolve the alkaline-based, surface/etched mineral water deposits with one or more of the following;
a) Use a 2:1 or stronger solution of distilled water/distilled white vinegar (Acetic acid)
b) Try a 2:1 solution of distilled water/Isopropyl Alcohol (adjust ratio as required)
c) Or equal parts distilled water/distilled white vinegar/Isopropyl alcohol.

3. Clean the effected surface with Klasse All-In-One or Zaino Z-PC Fusion Dual Action Paint Cleaner
4. Use detailing clay to remove any `hard' surface granules
5. Use a machine polish (Optimum Polish, Optimum Compound) and a cutting (LC White, Orange or Yellow) foam pad (speed # 4- 5.0) to level the paint surface
6. Use the least aggressive polish/foam pad first, if this doesn’t remove the problem step-up to a more aggressive polish / foam pad set-up
7. Wet-sand with 2000, 2500 or 3000 grit finishing paper



“Removing Water (Spots) Marks” - http://www.autopia.org/forum/guide-d...ml#post1448627
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      08-17-2012, 07:38 PM   #9
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Quote:
Originally Posted by TOGWT View Post
Removing ‘Water spots’
Always start by using the least abrasive product first
1. Use a paint surface cleaner (Z-PC Fusion Dual Action Paint Cleaner or Duragloss 501)

2. Try to dissolve the alkaline-based, surface/etched mineral water deposits with one or more of the following;
a) Use a 2:1 or stronger solution of distilled water/distilled white vinegar (Acetic acid)
b) Try a 2:1 solution of distilled water/Isopropyl Alcohol (adjust ratio as required)
c) Or equal parts distilled water/distilled white vinegar/Isopropyl alcohol.

3. Clean the effected surface with Klasse All-In-One or Zaino Z-PC Fusion Dual Action Paint Cleaner
4. Use detailing clay to remove any `hard' surface granules
5. Use a machine polish (Optimum Polish, Optimum Compound) and a cutting (LC White, Orange or Yellow) foam pad (speed # 4- 5.0) to level the paint surface
6. Use the least aggressive polish/foam pad first, if this doesn’t remove the problem step-up to a more aggressive polish / foam pad set-up
7. Wet-sand with 2000, 2500 or 3000 grit finishing paper



“Removing Water (Spots) Marks” - http://www.autopia.org/forum/guide-d...ml#post1448627
Great post. Thanks.
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