[carlh]

Some info on why maybe washing up liquid is not so good (found from a variety of sources):

Washing up liquid contains:

- Salt - Aids corrosion of bare metal
- Surfactants - Wetting agent will help water capilliary behind seals and could penetrate poor paint finishes taking the salt with it.
- Formaldehyde - Perishes rubber (e.g wiper blades)
- Sodium Laury Sulphate - Makes it 'thick' and feel slick - Made from animal fat that will biodegrade and cause offensive odour.