Do you spend hours washing your car only to rinse it off and get water spots? Learn how to turn hard water into soft water in eliminate hard water spotting.
Use a mixture of about 1/2 cup Borax to 5 gallons of water and rinse your car. The Borax is a water softener and will eliminate hard water spotting. Works best with warm to hot water since the Borax is a powder. You may also mix in a 5 gallon bucket and rinse that way by making the mix and dumping the mix onto your car.
I use a hose end applicator and a garden hose, this will automatically mix for you
You could also siphon the mix out of a 5 gallon bucket using your pressure washer and the black chem tip.
