I wash my car at home using a garden hose. Lately, the finish looks dull and marked. What could be wrong?
Washing your car at home is extremely harmful to the finish. Tests conducted by the University of Texas proved that a single home hand-wash can leave scratches in the finish as deep as 1/10 of the paint's total thickness. And, that the average garden hose can't supply enough water and water pressure along with the detergent action to avoid damaging the car's finish. This important study concluded that automobile owners should avoid washing their cars at home. Only a professional carwash can provide the proper amounts of water and water pressure needed along with the appropriate, professional cleaning solutions to safely and effectively clean your car.