McKee's 37 SiO, Auto wash is a high-sudsing, pH-balanced snow soap that is designed specifcally for the unique cleaning requirements of vehicles that are coated using a silica, quartz, or ceramic paint coating. This thick, watermelon-scented shampoo gently releases dirt and grime without leaving a film that would otherwise hinder the beading and sheeting characteristics of your coated vehicle. A touch of SiO2 enhances the brightness of your paint coating without altering the look or the feel. Wax and silicone-free formula does not clog the pores of the coating. Water softeners help prevent water spots, even on hot summer days. Hyper-concentrated formula only requires an ounce or two depending on the size of your wash bucket.