Bio-Kleen Step 1 Aluminum Acid Wash is a powerful, fast-acting foaming cleaner designed specifically for aluminum surfaces and fleet washing applications. This concentrated formula begins working immediately upon contact, effectively removing tough grime and oxidation while containing special inhibitors to prevent future corrosion. Perfect for industrial, commercial, and janitorial use, this versatile cleaner can be diluted at various ratios for specific applications - from aluminum rims (1:4) to brake dust removal (1:9) and fleet washing (1:10 - 1:100). The unique foaming action helps the product cling to vertical surfaces, maximizing cleaning power on raw aluminum and metal surfaces. Simply apply to a dry surface, allow 3-5 minutes of dwell time as it foams, retreat exposed areas as needed, and rinse thoroughly.