C-Coat PreWash is a highly efficient precleaning liquid with a slightly alkaline pH value. While easily getting rid of contaminants like mud, C-Coat PreWash does not harm the paintwork and is safe to use even on cars having ceramic coatings. Recommended dilution: 1:50 in normal cases; 1:10 for harsh contamination; 1:5 for extreme surfaces like wheels. 4L