Wheel Cleaner Sonax 230500 by Sonax is a premium aftermarket solution engineered specifically for wheels exposed to high levels of iron-rich brake dust, oil, rubber residue, and road grime. This 5-liter refill, with manufacturer part number 230500, features an advanced color-change formula—transforming from bright green to deep red as it interacts with contaminants for visible cleaning power. The acid-free, pH-neutral formula is safe for all wheel surfaces, including clear coated, chrome, painted, and polished finishes. Suitable for all model years of Audi, BMW, Jaguar, Land Rover, Mercedes-Benz, Mini, Porsche, Saab, Volkswagen, and Volvo. Simply apply, allow the color change to indicate cleaning, and rinse for optimum wheel shine.