Best Alkaline Pre Wash Cleaner for Heavy Grime
1. Will Koch Chemie Vorreiniger B strip the wax off my car paint?
Yes this powerful alkaline pre wash cleaner will degrade or completely strip natural carnauba waxes and basic synthetic sealants. It is explicitly designed for heavy duty decontamination and preparing the clear coat for polishing. If you want to maintain your existing wax layers you should choose a pH neutral snow foam instead.
2. Can I let Koch Chemie Vorreiniger B dry on my vehicle in the sun?
No you must never allow this highly concentrated alkaline chemical to dry on your vehicle paint or glass. Letting it bake in direct sunlight can cause severe chemical staining and permanent etching on delicate clear coats and plastic trims. Always apply it to a cool surface in the shade and rinse it off completely with water.
3. How do I fix white stains on plastic trim after using Koch Chemie Vorreiniger B?
If you notice white chemical stains on your textured plastics it means the alkaline solution was mixed too strong or allowed to dry. To fix this mistake you must immediately rewet the area with a mild all purpose cleaner and scrub gently with a soft detailing brush. Rinse heavily to neutralize the remaining caustic residue.
4. Is Koch Chemie Vorreiniger B safe for use on polished aluminum wheels?
No you should strictly avoid using this potent alkaline pre wash cleaner on bare polished aluminum or sensitive chrome wheels. The highly caustic chemical nature of the formula can quickly oxidize the unprotected metal and cause permanent cloudy stains. Only use it on factory clear coated alloy wheels or standard painted rims.