Dr. Wack "P21S" P21S "POWER GEL" Wheel Cleaner 750ml

Dr. Wack P21S "POWER GEL" – the original for uncompromisingly clean wheels

Why is the Dr. Wack P21S POWER GEL wheel cleaner so effective? Because its gel formula breaks down even stubborn brake dust without any acid, stays gentle on the material, and gives you a clean, glossy result in just 3–5 minutes.

The Dr. Wack P21S "POWER GEL" wheel cleaner has been the original among wheel cleaners since 1976 – a repeat test winner and still a real benchmark in car care today. Its highly effective gel formula reliably dissolves even badly baked-on brake dust, oil and rubber residue – completely acid-free. Alloy, steel or chrome wheels: the POWER GEL cleans safely, fast and gently on the material, with zero risk to paint, the wheel barrel or TPMS sensors.

• Top cleaning power without acid: Pulls off even baked-on brake residue and winter crust without attacking the wheel surface or bleaching the material.

• Gel formula for maximum grip: The POWER GEL clings longer, doesn't run off and works on its own – for a thorough deep clean with low usage.

• Fast, safe application: Just spray it on, let it dwell for 3–5 minutes, rinse – done. No scrubbing, no risk to sensitive coatings or valves.

Material-friendly active formula and technology

The strength of the P21S POWER GEL lies in its chemically balanced, completely acid-free make-up. Dr. Wack relies on a highly active surfactant system with a special complexing agent based on sodium mercaptoacetate. This molecule reacts specifically with metallic brake residue (mainly iron oxides) and dissolves it without attacking the sensitive metals or paint. The colour change – from clear to violet – shows the active cleaning phase. Thanks to the gel structure, the cleaner stays put even on vertical surfaces, which clearly boosts dwell time and cleaning power. The high viscosity makes sure brake dust deep in the pores gets broken down too, before it's rinsed away completely. The result: evenly clean wheels with their original shine – no scrubbing, no micro-scratches.

Application and day-to-day tips for perfect results

Using the P21S POWER GEL wheel cleaner is easy, but like with proper detailing you want to be deliberate about it. Spray the product evenly onto the dry, cooled-down wheel. Thanks to the gel grip a thin film forms right away that clings even in hard-to-reach spots – between spokes, in the wheel barrel or behind the bolts. After about 3–5 minutes of dwell time the cleaner turns dark red to violet: that's the sign brake dust and metal particles are actively being dissolved. Then just rinse it off with a strong water jet or pressure washer. For a perfect finish on badly neglected wheels you can help things along with a soft wheel brush. Important: don't let it dry on, and don't use it in direct sun. Since the cleaner is completely acid-free, the risk of corrosion or dull spots stays at zero – even on polished alloys or sensitive multi-piece wheels. It's also TPMS-compatible and biodegradable, so it's safe in everyday use. After cleaning, a wheel sealant is worth doing to make fresh dirt stick less.

Results, durability and use cases

What we see day-to-day is that the P21S POWER GEL delivers an extremely clean, even finish with no residue. Brake dust, oil and tar particles come off completely, the wheel surface feels smooth and clean – the perfect base for follow-up care or a sealant. Hard-driven cars or vehicles with open brake setups in particular benefit from the strong yet gentle cleaning. The gel-like formulation makes the product go a long way, since less cleaner runs off the wheel. Thanks to its pH-neutral action the POWER GEL doesn't attack paint, plastic parts or valves and can be used regularly. It's ideal for classics, chrome wheels or multi-piece alloys too – even with frequent use you get no stains or changes in the surface structure. The difference is visible and tangible straight away: smooth, glossy wheels with no residue – and all in a few minutes.

Common questions about Dr. Wack P21S POWER GEL wheel cleaner

How long should the P21S POWER GEL dwell? 3 to 5 minutes is plenty. Then just rinse off with a strong water jet. If needed, give it a quick help with a soft brush.

Can I use the cleaner on warm wheels? No. The wheels should be cool and dry so the cleaner doesn't dry on and works at its best.

Is the P21S POWER GEL also suitable for matte or painted wheels? Yes, because it's completely acid-free. It doesn't attack paint, powder coatings or matte surfaces.

How often can I use the cleaner? Regularly – even with every wash. The pH-neutral formula is gentle enough for ongoing use.

Why does the cleaner turn violet? That's the reaction with iron-rich brake dust. The colour change shows the dirt is being actively dissolved.

Last updated: 27.10.2025 — Author: Daniel (Detailing1)

So wendest du den P21S POWER GEL an

Sprühe das Gel gleichmäßig auf die trockene, abgekühlte Felge. Durch die Haftung bleibt der Film auch zwischen Speichen, im Felgenbett und hinter den Schrauben stehen. Nach 3-5 Minuten faerbt sich der Reiniger violett - das Zeichen, dass Bremsstaub aktiv gelöst wird.

Danach mit kraeftigem Wasserstrahl oder Hochdruckreiniger restlos abspülen. Bei stark vernachlaessigten Felgen hilft eine weiche Felgenbürste. Arbeite nie in der prallen Sonne und lass das Gel nicht antrocknen.

Weil die Formel säurefrei und RDKS-kompatibel ist, eignet sie sich für Alu-, Stahl-, Chrom- und matte Felgen und kann regelmäßig eingesetzt werden. Im Anschluss lohnt eine Felgenversiegelung, damit neuer Schmutz weniger haftet.