Porsche 911 Carrera - Manual (Page 263)

Periodically clean the wiper blades with
Porsche window cleaner, especially after the
vehicle has been washed in a car wash. If they
are very dirty (e.g. with insect remains), they
can be cleaned with a sponge or cloth.
Undercoating
As it is not possible to exclude the risk of damage
to this protective coating in day to day driving,
it is advisable to have the underside of the car
inspected at certain intervals - preferably before
the start of winter and again in spring - and the
undercoating restored as necessary.
Your authorized Porsche dealer is familiar with
the bodyseal treatment procedures and has
the necessary equipment for applying factory
approved materials. We recommend that you
entrust them with such work and inspections.
Unlike conventional spray oils, undercoating and
rust-proofing compounds based on bitumen or wax
do not attack the sound-proofing materials applied
at the factory.
Warning!
Danger of re resulting in serious personal
injury or death.
Do not apply additional undercoating or
rust-proofing on or near the exhaust manifold,
exhaust pipes, catalytic converters or heat
shields. During driving the substance used for
undercoating could overheat and ignite.
Before applying fresh underseal, carefully
remove any deposits or dirt and grease. Once
it has dried, the new undercoating compound
forms a tough protective coating which
provides efficient rust-proofing of the floor
panels and components.
Always apply a fresh coating of suitable
preservative to unprotected areas after
cleaning the underside of the body, the
transmission, the engine or carrying out
repairs to under-body, engine or transmission
components.
Effective rust-proofing is particularly important dur-
ing the cold weather season. If your car is driven
frequently in areas where salt has been spread
on the roads, the whole engine compartment
should be cleaned thoroughly after the winter to
prevent salt from causing any lasting damage. A
full under-body wash should also be performed at
the same time.
Stainless steel exhaust tailpipes
Stainless steel exhaust tailpipes can discolor due
to soiling, strong heat, and combustion residues.
The original polish can be achieved again using
commercially available metal polishing paste or
metal polish.
Light alloy wheels
Please observe the chapter ”AUTOMATIC CAR
WASHES” on page 258.
Warning!
Danger of accident resulting in serious
personal injury or death if cleaning agents
(e.g. wheel cleaning agents) come into
contact with the brake discs. The resulting
lm on the brake discs can impair braking
performance.
Make sure that no cleaning agent comes into
contact with the brake discs.
If cleaning agent has come into contact with
the brake discs, thoroughly clean the brake
discs with a strong jet of water.
Paying attention to any road users behind you,
dry the brake discs by applying the brakes at
short intervals.
Pitting may occur if metallic particles which cause
contact corrosion (e.g. brass or copper in brake
Maintenance, Car Care
261