Porsche 968 - Fuel System Information; Fuel Tank Operation; Fuel Octane Rating Requirements; Fuel Can Safety Precautions

Fuel Tank
The fuel filler neck is in the side panel above the
right-hand rear wheel.
To prevent it overflowing as hot fuel expands,
the tank has an additional space which should
not be filled with fuel.
The tank is "full" when the correctly operated
automatic fuel-hose nozzle cuts off.
Carefully place the tank cap in position , turn it
until it engages wi th an audible · click , and lock
with the ignition key.
until the fuel tank is com-
Always switch off the engine before refuelling .
To protect the exhaust system from dam ag e,
the diameter of the tank filler neck is smaller
and the neck is fitted with a flap designed to
prevent the tank being filled with leaded fuel by
mistake .
Only the nozzle of an unleaded-fuel pump will
open the flap .
Fuel Octane Rating":
The engine is designed to provide optimum per-
formance and fuel consumption if unleaded pre-
mium fuel, minimum 98 RON / 88 MON is used.
If unleaded premium fuels with octane numbers
of at least 95 RON I 85 MON are used, the
engine's knock control system automatically
adapts the ignition timing .
Fuel Can
Prompt refuelling as well as the large tank
capacity and a reserve of approx. 8 litres make
it unnecessary to carry a fuel can.
If you are nevertheless obliged to carry a spare
can, it should be securely fastened in a safe
place (e.g. behind the rear seat back). Incorrect-
ly s ecured cans may be damaged in an accident
and the escaping fuel may increase the risk of
fire or explosion.
or fumes can be
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