Try a Mister Clean wash kit. It works quite well for hard water. The filters plug up in a few washes but it's better then trying to get the SPOTS off. You can get it at Wal-Mart or any store like that.
the water supply for washing a veh is on the line before it gets to the house. A softener for the house does not treat this faucet.
the water supply for washing a veh is on the line before it gets to the house. A softener for the house does not treat this faucet.