They tested 12 Body Shampoos (for use in Pressure Washers
).Top Three came out as:
1) Bilt-Hamber Surfex HD (Auto Express Best Buy 2012)
2) Angelwax Fast Foam (Auto Express Recommended 2012)
3) Swarfega Vehicle Cleaner.
All sorts of background included in the Article i.e. how they conducted the test, etc and a good write-up alongside every one of the 12 products tested.
as i would not use a shampoo in a pressure jet washer i would use snowfoam with a lttle shampoo added into the mix along side snowfoam just to froth things up a bit 
