Hi Jem, just put together a new Pressure washer I'd bought over the weeknd. It's a Nilfisk C120.6, badass little thing for just £99!
The pressure suprised me when I first used it considering how tiny it is. Any way, I did a little search online to see the dilution used and most people say 100:1 or about an inch or 2 in the bottle. I measured the snow foam lance bottle and it is approx. 600 ml.
For my trial run this morning I put around an inch of magifoam in and filled the bottle to the neck with warm water. As I sprayed it on initially the foam looked nice and thick... a few seconds later it became rather thin and the foam was pretty much just running straight off the car.
Any help is appreciated mate.
Cheers
Ry