Porsche 911 TURBO - 1975 WORSHOP, Manual

Page: 183 / 252

Maintenance, Car Care
183
Fuel
Warning!
Fuel is highly flammable and harmful to
health.
f Fire, naked flame and smoking are prohibited
when handling fuel.
f
Avoid contact with skin or clothing.
f Do not inhale fuel vapours.
f Please observe the chapter “EMISSION
CONTROL SYSTEM” on page 182.
f
Please observe the chapter “FUEL” on
page 72.
To avoid permanent damage to the functionality of
the catalytic converters and oxygen sensors, use
unleaded fuel only .
The engine is designed to provide optimum
performance and fuel consumption if unleaded
premium fuel with 98 RON/88 MON
is used.
If unleaded premium fuels with octane numbers of
at least 95 RON/85 MON are used, the
engine's knock control automatically adapts the
ignition timing.
Note on operation
Information on the fuel quality is normally provided
on the petrol pump.
If this should not be the case, ask a petrol station
attendant.
If the recommended fuel is not available,
you can also use unleaded regular fuel
(91 RON/82.5 MON) in an emergency.
However, this could reduce performance and
increase fuel consumption.
f
Avoid driving at full throttle.
In some countries the available fuel quality may
not meet requirements, and this can lead to
coking in the area of the intake valve.
In this case, the fuel may be mixed with the
additive sold and recommended by Porsche after
consulting a Porsche partner.
Porsche part number 000 043 206 89.
f Observe the instructions and mixture ratios
provided on the container.
Opening the filler flap
The filler opening is under the filler flap in the front
right wing.
f
With the vehicle unlocked, press on the front
part of the filler flap (
arrow
).
The filler flap is locked or unlocked by central
locking.