Steep price, but worth every penny.

The manufacturer of my vehicle allowed in the winter only aluminum wheels and they are strained by road salt in conjunction with brake dust arg. After 2 Winter inserts this looked very taken, "branded" with black lining and large yellow stains that were visible after "normal" wash the wheels. After unsuccessful attempts with various rim cleaners I tried P21S Powergel. First, in the 1 liter Sprühvariante. This was a large part of the fixed soil already on their own. For heavy soiling you had again nachpinseln but then went even the stubborn yellow stains and "be eaten" Schwaren points away. I noticed that the not exactly cheap detergent can apply a lot better with the brush. Be where I need only around for 4 wheels. one third of the previous amount. Although the agent does not smell "to sugar" but I think it's bearable. It also comes from without acid which can corrode the aluminum wheels. I am completely satisfied with the funds and buy now the big 2-liter or 5-liter pack.

Conclusion: If you want to quickly get very dirty rims completely clean without a lot of time use, for the P21S Powergel is a very good option. Although not quite cheap, the agent is worth every penny to me, especially since a more effective application can be achieved with the brush.