Oxidation:
Oxygen is highly reactive. It is just about the
only substance that can be made to react with
a noble gas. Almost everything oxidizes. And many
elements, including light, free ions in water,
heat, and salt, act as catalysts for oxidation,
worsening the problem. On an automobile, the main
oxidation concern is the paint. Most oxidation
reactions, such as rusting, produce a material
that is rough, hazy, brittle, and generally unappealing
to the senses. So it’s gotta go.
If you have a light
colored car, especially white, you may see little
red spots on it after a while. This is a specific
type of oxidation called fallout. Actually it
is rust which, as the name implies, falls out
of the sky and settles on the vehicle, bonding
to the paint due to its acidic nature. Besides
being more noticeable, it is similar to oxidized
paint.
Oxides tend to be
chemically inert, but brittle, so they are most
easily removed mechanically as opposed to chemically.
There are de-oxidation chemicals on the market,
but White Glove recommends against using them
as they are strong acids (usually sulfuric or
hydrochloric acid) and thus potentially harmful
to people and materials such as vinyl, rubber,
and chrome. Oxidation can be removed by buffing,
but White Glove recommends against it except in
extreme cases. The most effective method for removing
oxidation is the clay bar.
The best way to prevent
oxidation is to keep your automobile waxed at
least once a year. Wax creates a protective layer
of material that oxidizes preferentially to paint.
Swirls:
Swirls are shallow scratches in the paint. They
are most noticeable on dark paint, but can easily
be seen on lighter ones. They look a lot like
spiderwebbing when seen around the sun’s reflection;
it takes a trained eye to tell the difference.
But unlike spiderwebbing, they can be seen in
the shade, cause a significant loss of reflection,
and do not line up concentrically. There is a
laundry list of causes, including poor buffing,
poor use of a clay bar, using dirty towels, driving
through dust or snow, and windy days. They can
be removed by hand polishing, a service which
White Glove gladly provides.
Spiderwebbing:
Spiderwebbing is most noticeable on dark paint,
especially black. If you look at the paint in
the shade, or without looking directly at the
sun's reflection, you cannot see it. However,
if you look directly at the sun’s reflection,
you can see broken concentric circles connected
by faint radial lines. This is an optical property
of any reflective surface with depth, caused by
refraction and wave interference. It is not caused
by swirls. In fact, the same phenomenon can be
seen with a mirror, or even a shallow pool of
water on a smooth, reflective surface (not asphalt).
So how do you get rid of it? You must prevent
light from penetrating the surface of the paint;
only a colored sealant will do this, and White
Glove advises against using them (see “Sealants”
under Waxes).