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1994 Volvo 850
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
lower relative humidity than if the surface were clean.
● Increased temperature will cause an accelerated rate of corrosion of those parts of the car which are
not well ventilated to permit quick drying.
● Industrial pollution and the presence of salt will also accelerate the deterioration of paint finishes.
The foregoing identifies the need for every car owner to keep his or her car-particularly the underside-as
clean and dry as possible and to repair any minor damage to paintwork and protective coating as soon as
possible.
The need is more important in those areas where road salt is used for de-icing, the relative humidity is
higher, air pollution is present, and temperatures regularly stay above freezing.
Rustproofing, inspection and touching-up
Your Volvo was carefully and thoroughly rustproofed at the factory.
The underbody and wheelhousings were sprayed with a thick, durable rustproofing compound and the
beams, internal cavities and end sections were sprayed with a low viscous, penetrating rustproofing
agent.
There are two very effective methods of maintaining this protection:
● Keep your car clean.
Clean the underbody, wheelhousings and the edges of the fenders using water at high pressure.
● Inspect and touch-up the rustproofing if necessary.
The invisible (internal) rustproofing
As part of your maintenance schedule, it is important that the invisible rustproofing (used for beams,
internal cavities and end sections) be retreated first after 36 months and, thereafter, every 24 months.
Bear in mind, if good results are to be obtained, that these sections must be treated with a fine spray of
Volvo-approved rustproofing compound by your authorized Volvo dealer.
pg. 7:3 Rustproofing (cont.)
The visible rustproofing
The visible (external) rustproofing must be inspected by an authorized Volvo dealer at least once a year.
If it is necessary to touch-up the rustproofing, this should be done immediately to prevent moisture
penetration. Wash and dry thoroughly before touching up. Use spray-on or brush-on rustproofing
compounds. An oil can with a long flexible spout may be used for parts which are difficult to reach.
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