I thought I would give this snow foam a whirl, so I bought the foam gun for my Karcher K4 and 5L of snow foam from Halfords trade value range. After running out the extension lead + extension for hosepipe to reach out of the gate I rinsed off the Zed with the jet wash then attached the snow foam gun, what happens next is hilarious for anyone watching, you have approx 1min to run around like a lunatic spraying foam trying to cover the whole car before it runs out, I then stood admiring my pile of suds for the 3 minute dwell time, back on with the jet wash till all was back to Havanna Brown. I ran the car down the lane for a blow dry then back home to admire my handy work, don't get excited guys I honestly couldn't tell any difference from 20mins before when I started. So for me personally its back to the hose pipe and two bucket method with 2 cap fulls of Simoniz car wash wax and the all important microfibre cloth, I have however invested £8 in 600ml of Carplan No1 super gloss, this is so simple to apply and the result is impressive as is the smell of the product and allegedly lasts 12mths, the shine/water beading that is not the perfume lol.