you need a pressure washer, and a proper foam lance from the likes of www.cleanyourcar.co.uk
Basic principals
Rinse
Foam
Rinse off foam (this removes worst of the dirt)
Wash with 2 buckets and wash mitt (no sponges!)
Rinse
Air dry or dry with microfibre drying towel
Foam removes the worst of the dirt but isn't a complete replacement to shampooing by hand. By foaming first you reduce the risk to dragging particles (such as road grit) across the surface and damaging the paint whilst washing by hand.
Tris has a much more detailed guide here: https://www.fiatforum.com/car-care/188996-basic-guide-how-clean-your-car.html
you can get sprayers that go on the end of your hose pipe, but they arent as good.
Although, they do seem to get all the crap off, but the foam doesnt look as good
ive jsut got some of the pink stuff from autobrite
I have a autobrite one which i am going to stick on ebay in the next week (used 8 times) , along with 7 litres of snow foam.
I am also thinking of sticking my karcher pressure washer on ebay too.
As said before i would use the TBM, dont bother rinsing the car before hand, foam staright on, leave for 10 mins for the foam to get good contact with the dirt, dont pressure wash off as small bits of grit can scratch the paint, rinse of gentle and then wash using a mitt, i would then snow foam again and then pressure wash off.
I use to use a mix of snow foam, megs shampoo and a little of poor boys bug spray and then fill the rest with warm water.
Works a treat to be honest.
cheers
robin
not mine, but:
Im going to get a snow foam lance very soon but now i need to know which snow foam to use?
That pink stuff looks cool but what is the best for the money?
Many thanks
Matt