Imperial Wheel Cleaner – A powerful blend of wheel cleaners and degreasers. For best results, combine with Iron Out. A favorite of many automotive professionals, Imperial Wheel Cleaner is formulated as an extremely powerful water-based cleaner, degreaser and brake dust remover that can remove the toughest salt, road film and other potentially harmful contaminants, while being completely free of acidic ingredients, making it gentle enough for regular use on all common alloy wheel finishes… even those previously waxed, protected or coated.