John Laidlaw
Senior Member
- Joined
- Nov 15, 2013
- Messages
- 26,373
- Reaction score
- 9,163
- Location
- Wirral
- Your Mercedes
- Land Rover Discovery 4
had one a few months now, filter media is still good...it has definetely reduced the water marks on those occasions where I have left the car to dry naturally and not towelled off (which isn’t often to be honest, can’t stop the habit of using the microfibre towel!) but , certainly on obsidian black, you will still see water marks unfortunately....