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How To: Removing calcium deposits from your car's paint.

33K views 2 replies 2 participants last post by  johnny_s  
#1 ·
Sounds strange enough, right? Well, this happened to me last week after owning my 04 hatch for only 3 days. It had been raining cats and dogs here in Milwaukee for two days and I come out the parking structure after work to find my car covered in what turned out to be calcium deposits. This was a result of the water seeping through the stone and concrete of the parking structure onto the roof of my car. Here's what it looked like (click image to enlarge):



Supplies needed to safely remove the calcium:

1 - bottle of distilled white vinegar
1 - soft sponge
1 - pair of rubber gloves (unless you want to smell like a pickle for a day or two)
The supplies came out to a grand total of $3.85 at the local grocery store.

I started off by shampooing the car using Meguiar's shampoo. This by itself removed a small amount of the calcium but a vast majority was still there. Next I applied the distilled white vinegar to the sponge and began softly scrubbing the car. The calcium disappeared almost instantly and the vinegar worked like magic. It only took a minute or two to clean the entire roof. REMEMBER: The vinegar is an acid and should be washed off immediately! It will also remove any wax that is already on your vehicle. I then thoroughly rinsed my car and shampoo'd it again for good measure. After that I polished and waxed the car as I normally would and she was good as new!

I just thought I would share this odd lesson that I learned the hard way. Hopefully this will spare someone the headache and frustration that I endured.

-Johnny
 
#2 ·
That's good to hear that vinegar worked, I'll have to keep that in mind if I ever run into a stain that I can't handle...

I suppose some other things I'd consider:

Paintwork Cleanser/Cleaner/lotion
Cleaner Wax
Turtle Wax Liquid Clay (or an liquid clay)
Standard Clay
 
#3 ·
[quote author=HouRman link=topic=108733.msg2230421#msg2230421 date=1208193371]
That's good to hear that vinegar worked, I'll have to keep that in mind if I ever run into a stain that I can't handle...

I suppose some other things I'd consider:

Paintwork Cleanser/Cleaner/lotion
Cleaner Wax
Turtle Wax Liquid Clay (or an liquid clay)
Standard Clay
[/quote]

Thanks for the reply HouRman.

I'm not sure about removing other stains but I guess it would be worth a shot to try the vinegar. Especially on other mineral deposits. From what I gathered reading elsewhere on the internet the vinegar worked on the calcium because calcium is an alkaline element, and acid (vinegar in this case) dissolves alkalines.

FWIW, I tried using a paint cleaner made by Meguiar's and it had little to no affect on the calcium. I didn't have clay to test and didn't try a cleaning wax because of the possibility of adding a layer or sealant on top of the stains.