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4-46 On the road
The continuous use of high quality fuel
makes the need for additional additives
unnecessary. This will help to protect the
engine components against corrosion,
carbon deposit formation and prevent the
fuel injection system from clogging.
If in doubt your local Jaguar Dealer will
advise on which fuel must be used in your
vehicle.
Emission control components
Owing to the legislative requirements or
options available in some markets, a
Jaguar Dealer should be consulted where
any doubt exists as to the precise
emission control system specification of
this vehicle.
Fuel requirements
Any vehicle NOT fitted with a catalytic
system can use either leaded or unleaded
fuel.
The use of either leaded or unleaded fuel
depends on the type of emission control
system fitted to the engine and the
legislative requirements in the country for
which the vehicle is manufactured.
The preferred fuel is 95 RON unleaded,
where selection is available.
Unleaded fuel
The filler neck of the fuel tank is a small
diameter to suit the unleaded fuel pump
nozzle and will prevent the larger
diameter leaded fuel nozzle from entering
the filler neck.
Unleaded fuel must be used for the
emission control system to operate
properly. Its use will also reduce spark
plug fouling, exhaust system corrosion
and engine oil deterioration.
Use unleaded fuel with an octane rating
of at least 95 RON (Research Octane
Number).
Note: ‘Super Green’ Plus 98 RON
unleaded fuel (where available) may be
used as an alternative to the standard
95 RON unleaded fuel.
Using unleaded fuel with an octane rating
lower than recommended can cause
persistent, heavy ‘spark knock’ (a metallic
rapping noise). If severe, this can lead to
engine damage.
If a heavy ‘spark knock’ is detected even
when using fuel of the recommended
octane rating, or if you hear steady ‘spark
knock’ while holding a steady speed on
level roads consult a Jaguar Dealer to
have the problem corrected. Failure to do
so is misuse of the vehicle, for which
Jaguar Cars Limited, is not responsible.
However, occasional light ‘spark knock’
for a short time while accelerating or
driving up hill, may occur.