Prewash
Goal: remove dirt without contact
- Apply foam (e.g. Koch-Chemie Vorreiniger B)
- Wait 1–5 minutes
- Do not let it dry
- Rinse off
Wash — hand wash
Goal: safely clean the surface
- Shampoo + 2-bucket method
- Wash top to bottom
- Rinse mitt after each panel
Wheels
Goal: remove brake dust
- Apply cleaner
- Agitate with brush
- Rinse
Drying
Goal: remove water without streaks
- Use microfiber towel
- Pat dry, don’t rub
Protection
Goal: protect the surface
- Apply sealant / quick detailer
- Buff with microfiber
Summary:
Prewash → Wash → Dry → Protection
❗ Common mistakes
- Skipping prewash → scratches
- One bucket only
- Too much pressure
- Washing in direct sunlight
- Letting chemicals dry