AO Silver Member
Join Date: May 2008
Location: South Africa
County: Western Cape
Re: cleaning with dishwashing detergent
Its actually quite simple:
Polishes are to a greater or lesser extent abrasive and make your paintwork shine. Some, but not all, contain fillers that mask scratches but will eventually erode leaving them visible once again. An example of a polish that contains fillers is AG SRP.
Waxes are there to protect your paintwork from the elements. They mostly are completely non-abrasive and contain carnauba wax. This is what makes the water bead on a car's paintwork. Examples of pure carnauba wax are Collinite and P21S.
There are also Sealants like Klasse/Car-Lack but that is another subject altogether
I re-iterate what I said earlier, living in Aussie you need to protect your paintwork with a good quality wax.
BTW many of the cheap car shampoos which you buy in the local supermarket contain salt so go for a good quality one which you will normally find in Motor Spares shops and online. The Meguiars shampoos are very good as are the AG ones