What Are Some Tips for Removing Hard Water Stains From Vehicles?


Quick Answer

Cleaning a car with dish soap and white vinegar removes hard water stains from the car's windows and body. For extremely stubborn stains, a product such as CRL may be used. It is very important to not leave cleaning products on glass for too long, as they can damage it.

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Full Answer

Hosing a car, then sponging off dirt with a mixture of dish soap and water, gives a good initial clean. The car should be rinsed and dried before proceeding.

A mixture of one part white vinegar and one part water is then sprayed onto the stains and left for a minute. The waiting period allows the vinegar to penetrate the stains.

Using a sponge to remove the vinegar also removes the stains. Once the stains are gone, the car needs to be rinsed again.

Vinegar removes existing wax from the paint, so wax should be reapplied after the final rinse.

CRL or other specialist products can remove more stubborn stains; however, they can etch the glass if left to sit for too long.

Spot-X and Stoner's Invisible Glass work to remove spots from car windows. It is best to apply them with a microfiber cloth to avoid scratching the glass. If a spot is permanent and has etched into the glass, it needs to be removed by a car detailer.

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