P21S Wheel Cleaner

[RazorIX]

Does anyone know which one is approved/recommended by porsche - is it P21S Wheel Cleaner by Brookside Import Specialists or the P21S WheelCleaner by "Dr. O.K. Wack Chemie GmbH", or is it that BIS still get the product from Dr Wack? However, following the court case Dr Wack completely stopped supplying BIS with the wheel cleaner unless they resolved their differences so I am interested in knowing which actual P21S `item` is recommended by Porsche.



Mark