Porsche 928S 1983 Driver Manual page 54

T i p s f o r " R u n n i n g - i n "
There are no particular rules to be observed
when "running-in" your new Porsche, how-
ever the following tips will be helpful in ob-
taining the optimum running properties.
Despite the most modern manufacturing
methods with their high precision, it cannot
be completely avoided that the moving
parts have to wear in with each other. This
wearing-in occurs mainly in the first 1000 km
(600 miles).
Oil consumption can be somewhat higher
than normal during the "running-in" period.
Therefore you should
never over-rev a cold engine, either in neu-
tral or in gear,
continually change the demands made
upon the engine and transmission,
never exceed 5000 rpm in the individual
gears,
always change gear in good time, and there-
by keep the engine in the optimum revolu-
tion range (note the Transmission diagram).
This of course also applies after running-in.
52
Maximum permitted revolutions
The red range on the rev-counter scale is a
visual warning.
When the maximum permissible engine speed
is reached, the governor built into the distri-
butor cuts off the ignition current, and thereby
prevents the engine from being overrevved
during acceleration.
Bedding-in new brake pads
New disc pads have to bed-in, and do not
therefore have the full braking ability in the
beginning. To compensate for this reduced
braking ability for approx. the first 200 km
(120 miles) a little more pedal pressure is
necessary. This also applies after having the
disc pads renewed at a later date.
Please note: New tyres do not posess their
full road-holding ability. Therefore only
drive at lower speeds for the first 200 km
(120 miles).
R o o f R a c k s
Normal commercially available roof racks
cannot be fitted.
If an original Porsche rack (as available hit-
herto) is fitted, the permissible roof load is 35
kg. With the "New Porsche Roof Transport
System" you can transport a wide variety of
sports and hobby equipment, up to a roof load
of 75 kg. There are many different racks to
choose from.
Your Porsche dealer will be glad to advise you
on the versatility of the "New Roof Transport
System".
To ensure minimum noise, maximum econo-
my and a desirable level of safety when driv-
ing with an unloaded roof rack, you should not
exceed a maximum speed of 180 km/h.
When the roof rack is loaded, the recom-
mended maximum speed depends on the na-
ture, size and weight of the load. You should
not however exceed a speed of 140 km/h at
any time. Make sure that the load is firmly and
securely fastened.