Fuel And Filling The Tank; Petrol; Filling The Tank - Audi S5 Owner's Manual

document_0900452a81793dcc.book Seite 217 Mittwoch, 21. März 2007 5:42 17

Fuel and filling the tank

Petrol

Petrol grade
The correct grade of petrol is listed inside the fuel tank
flap.
The vehicle is equipped with a catalytic converter and must only be
run on unleaded petrol. Unleaded petrol must comply with the
European EN 228 standard. The petrol grades have different octane
ratings (RON). If, in exceptional circumstances, the correct octane
rating is not available, please note the following:
Your engine normally requires Super Plus unleaded petrol (98 RON)
according to ⇒ page 281, "Performance, weights and dimensions".
Premium unleaded fuel with 95 RON can also be used. This can,
however, result in a slight loss of power under certain driving condi-
tions. If premium unleaded petrol is not available, the engine can be
run on regular unleaded petrol with 91 RON as an emergency
measure. In this case only use moderate engine speeds and a light
throttle. Avoid using full throttle. Fill up with premium or Super Plus
petrol as soon as possible.
Caution
Petrol complying with the EN 228 standard can contain small
quantities of ethanol. However, "bioethanol fuels", which are
retailed under various different names such as E50 and E85, and
which contain a large proportion of ethanol, must not be put into
the vehicle, as this would damage the fuel system.
Even one tankful of leaded fuel would permanently impair the
efficiency of the catalytic converter.
High engine speed and full throttle can damage the engine when
using petrol with an octane rating lower than the correct grade for
the engine.
Controls

Filling the tank

Filling the tank
The flap that covers the tank cap is unlocked and locked
automatically by the central locking.
Unscrewing the tank cap
– Press the left side of the flap to open it ⇒ fig. 207 -arrow-.
– Unscrew the tank cap anti-clockwise.
Safety Driving tips General maintenance
Fuel and filling the tank 217
Fig. 207 Vehicle as
seen from the rear
right: Opening fuel
tank flap
Fig. 208 Fuel tank flap
with tank cap attached
Self-help Technical data