Porsche 92854 Owner's Manual page 33

Manual transmissions
Tachometer
The transistorized tachometer operates on
the pulse count principle and shows engine
speed in revolutions per minute (rpm).
The red mark at the end of the scale indicates
the maximum permissible engine rpm. Before
reaching this area, the next higher gear should
be selected. Earlier shifting saves fuel.
Shift to the next lower gear when the engine
rpm drops below 1500 rpm.
Automatic transmissions
Indicator system for position
of gearshift
Whenever the ignition is switched on, or the
vehicle lights are switched on, the position of
the gearshift lever lights up in the display field
of the tachometer.
The display goes off when the key is removed
or when the vehicle lights are switched off.
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