Cheap car shampoo for Karcher?

HansOndabush

I have only ever used a bucket, sponge, and plain cold water on a car. If you have cleaned and polished your car twice a year, then that's all you ever need. Definitely avoid pressure washers as they can damage the paint and get water in all sorts of places it would be better without.

roddydogs

Pound shop shampoo is fine.

Nearlyold

I use this Clarke 5L Wash & Wax Car Shampoo - Machine Mart - Machine Mart

or if it's really filthy this (heavily diluted)
Clarke 5L Traffic Film Remover - Concentrate - Machine Mart - Machine Mart 

Apjs87

I use https://www.carparts4less.co.uk/p/simoniz-shampoo-wax-5litre-552996560?gclid=Cj0KCQiAvbiBBhD-ARIsAGM48bw2p7lj6iGQDF09kE_UYkAl6mQzHwg-6KryXUwyfoGCVDVj7bjKCzQaApvsEALw_wcB

Great value with added wax for paint protection. Don't use a sponge as these trap grit and cause swirl marks to the paint. Do use a pressure washer to remove any surface grit/dirt first, buckets with guards and a decent wash mitt. You should then be set to go.

roddydogs

Never had a problem with a sponge as long as you keep it clean and don't press too hard, you have to use something.

dipsomaniac

lot of conflicting advice on this subject.  I just do what the pros do wet car, soap with mitt, power wash, dry. all from top to bottom