You do realize that most car washes use HIGH PH products to get your vehicle clean. Meaning their like a acid on your car. It loosens everything up and than the water pressure blows off the now "mud" . Than they use a low PH product to try and rinse and neutralize the HIGH PH product. EVERY wash...basic to premium...uses this method. The undercarriage wash is really a joke. Its so low pressure that it might get a light coat of dirt off and thats about it. So that nice soft top you have, some poor rinses and like magic things become brittle and leak.Chrome...dulls. Decals..loosen up. Rims...get a nice new dull dirty look to them. Paint..IT WILL dull. Paint chips..allow chemicals to get under paint and begin the rust process. Plastics..nothing will change with those. So just hand wash your vehicle and enjoy doing it and massaging her all the time
