Lots of people ask about snowfoam so i thought id post it up showing what it does.
What i used:
Karcher pressure washer
Snowfoam lance
Snowfoam
Chemicial guys maxisuds II
No bucket or sponge was used just snowfoam and maxi suds II. In the lance bottle i mixed up 8 pumps of snowfoam and 2 caps of maxisuds II and topped up the rest with water.
Snowfoamed the car whilst it was dry and left for 5 mins. Snowed it again and left for 5 mins then rinsed off. Didnt use a bucket or sponge and still had loads left in the lance bottle. It wasnt perfect but still alot cleaner and removed all of the "hard" dirt.
Before
During
After
You can buy snowfoam and the lance from here
www.cleanyourcar.co.uk
Foaming lance
http://www.cleanyourcar.co.uk/washin.../prod_371.html
Snowfoam
http://www.cleanyourcar.co.uk/washin.../prod_370.html
Maxisuds II
http://www.cleanyourcar.co.uk/washin.../prod_165.html
You can get others but thats the one i used