2. Corrosion will be accelerated in areas of higher relative humidity, especially where temperatures often
stay above the freezing point and where the atmosphere is affected by industrial pollution, or where salt
is used for de-icing the roads.
Where parts of the car are covered with road dirt containing road salt, corrosion will be accelerated at a
lower relative humidity than if the surface were clean.
3. Increased temperature will cause an accelerated rate of corrosion of those parts of the car which are
not well ventilated to permit quick drying.
4. Industrial pollution and the presence of salt will also accelerate the deterioration of paint finishes.
The foregoing underscores the need for every car owner to keep his or her car, particularly the
underside, as clean and dry as possible. Repair any minor damage to paint work and protective coating
as soon as possible. The need is more important in those localities where road salt is used for de-icing,
the relative humidity is higher, air pollution is present and temperatures regularly stay above freezing.
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