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Old 08-06-2014, 11:56 AM   #12
AFRichZC6
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Depending the severity of the mineral water spots and if you need a more aggressive approach to remove them, try using a 1:1 water to CLR (Calcium Lime & Rust) mixture. Work small sections at a time and work in the shade on a cool surface. Spray it on, let it sit for about 60 seconds, then wash it off thoroughly. It will strip wax/sealant, but Opti-Coat and other ceramic coatings should hold up well against it.

On glass, you can let it sit longer, but be mindful of what it makes contact with when it runs down.
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