"W. Wells" <otf70@nc.rr.com> wrote in news:4707656f$1$18908
$4c368faf@roadrunner.com:

Clay and claying are clay bars used to detail cars.
See; http://www.autopia-carcare.com/inf-clay.html for a bit more info.

Basically, you use a special clay bar to remove fine particles that are on
and in your paint. This brings the paint back to (like) new condition.*  
Then you clean the residue off and apply a quality wax to keep the shine.

Most people who clay their cars do it about twice a year, in spring and
fall.

It's hard and time consuming work but your car will look like a million
dollars** afterwards.

* If your paint is badly oxidized then this won't bring it back from the
dead.

** If you're car is green in color. If it's blue then it will look like a
lot of English 5 pound notes.