Dirty calcium water fell on my car hood

[sito]

Some dirty water from underground garage fell from on my car. It left a deep mark. I used interior detail cleaner to wipe off most of it but there one stain etch on the paint. How do I get rid of it?

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[DaHen]

I've had good luck with CLR, (Calcium Lime & Rust). :xyxthumbs:

 

[jamesboyy]

You most likely will habe to use a acidic based water spot remover like the meguiars water spot remover in the red bottle you get from pepboys or auto parts stores

 

[Setec Astronomy]

You most likely will habe to use a acidic based water spot remover like the meguiars water spot remover in the red bottle you get from pepboys or auto parts stores

That's an abrasive product, rather than a chemical product like white vinegar, or one of these:


CarPro Spotless Water Spot Remover

Duragloss Water Spot Remover (WSR) #505

Finish Kare SIRR Steel, Iron Rust Remover, auto paint iron remover, ferrous metal remover, paint cleaner, paint decontamination system

Sito, the easiest thing to try is take a paper towel and soak it with white vinegar, and let it sit on the spot for a little while to dissolve the minerals, or try one of the above products. If there is any etching after you remove the surface minerals, you may have to polish that out.

That parking garage runoff is brutal.