P21S Wheel Cleaner Gel Formula
Europe's famous automakers don't always agree on everything but they do think alike when it comes to wheel care. BMW, Mercedes, Porsche, Audi, VW and Volvo all use and recommend P21S Wheel Cleaners to remove brake dust and road grime from their alloy wheels.
Developed in 1976 by a German chemist, P21S is a safe, pH-controlled, non-acid, non-lye based detergent that provides terrific cleaning and guarantees not to damage any type of wheel: painted, clear-coated, polished or anodized.
While more costly than the wheel cleaners found in discount and auto parts stores, P21S Wheel Cleaners can be significantly cheaper to use over the long run... ask Porsche owners who ruined their 911 5-spoke forged alloy wheels using the wrong wheel cleaner!
Gel Formula P21S - for wheels that tend to soil heavily due to higher braking speeds, softer brake pads or infrequent cleaning. Spray on, allow to stand up to two hours, lightly brush or sponge the surface and rinse off with a sharp stream of water. Gel composition clings to vertical surfaces to provide increased cleaning effect.
Wheel cleaning: Brake dust can cause permanent damage to the surface of your rims, so you should never forget the wheels when washing. Thorough and regular care of your wheels will add the finishing touch to your automobile.