Jaguar XJ (2008 year). Service manual — part 44

177

Driving Information

R

Tow bar Fixing Points

The mounting points (A) require drilling for
tow bar mountings.

Tow ball centre height from the ground at
Gross Vehicle Weight (GVW) (B) =
385 mm (15.157 inches).

Tow ball centre distance from bumper
cover (C) = 76 mm (3 inches).

Note: This vehicle has an aluminium
body, any part drilled, and any fixings
attached, must be specially protected to
prevent body corrosion. For further
information please contact your Dealer.

Caution: Contact your Jaguar Dealer
for details of additional parts that are
advised to be fitted before towing.
This is particularly important with this
vehicle having air suspension. If
unapproved towing equipment is used
whilst towing, the air suspension speed
lowering function will not be inhibited.
This may result in a change in trailer
weight distribution and attitude.

C

E86386

B

A

Fuel and Refuelling

178

L

Fuel and Refuelling

REFUELLING

Before refuelling, switch off the ignition
and remove the key.

Note: Do not leave the ignition key in the
vehicle; vehicles have been stolen from
garage service/filling stations whilst the
driver is absent from the vehicle. It is
recommended that the vehicle is locked, if
left unattended.

Caution: No additives of any kind (fuel
or oil) must be put into the fuel tank.
Additives could reduce engine life or
affect exhaust emissions.

!

WARNING:

• Fuel vapour is highly flammable and

in confined spaces is explosive and
toxic. In the event of inadvertent
spillage, and before refuelling,
always switch OFF the engine. Do
not use exposed flame or light. Do
not smoke. Do not inhale fumes.

• Do not fill the tank so that fuel is

visible in the fuel filler intake tube.
This could cause spillage and
danger from exposed fuel.

Caution: Your vehicle is fitted with
catalytic converters and must only be
filled with unleaded fuel.

Filling the Fuel Tank

The fuel filler flap release switch is located
in the knee bolster switchpack below the
facia. The filler flap is on the right-hand
side of the vehicle.

A small arrow is shown on the fuel gauge
as a reminder on which side of the vehicle
the fuel filler flap is located.

Open the fuel filler flap and turn the filler
cap counter-clockwise, an 1/8 turn, and
remove the cap from the filler neck. The
cap is held by a retaining strap and can be
stowed over the hook on the flap to allow
easy access to fill the tank.

E86379

E86380

179

Fuel and Refuelling

R

A warning label on the inside of the fuel
filler flap advises type/grade of fuel.

When filling, the dispenser nozzle must be
inserted into the filler neck sufficiently to
open the trap door for fuel to flow into the
fuel tank. For quickness and to
completely fill the tank, ensure that the
fuel nozzle rests on the filler neck as
shown. Fill the tank until the filler nozzle
automatically shuts off. Filling beyond this
point could result in fuel spillage.

After refuelling, twist the filler cap
clockwise until it clicks and close the flap,
which automatically locks shut.

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.

The filler neck of the fuel tank has a small
diameter to suit the unleaded fuel pump
nozzle and will prevent the larger diameter
leaded fuel nozzle from entering the filler
neck.

Not all countries have a small diameter
nozzle so care must be taken to only fill
the tank with unleaded fuel.

FUEL CAPACITY

Avoid the risk of running out of fuel and
never intentionally drive the car when the
fuel gauge indicates that the tank is
empty. When refuelling your vehicle after
the fuel gauge reads empty, you may not
be able to add the fuel quantity shown
below to the tank as there will be a small
reserve remaining in the tank.

E86381

Fuel tank capacity

85 litres
22.4 US gallons

Fill capacity
(when the fuel gauge indicates empty)

79 litres
20.9 US gallons

Reserve capacity
(when the fuel gauge indicates empty)

5.8 litres
1.5 US gallons

Fuel and Refuelling

180

L

FUEL ECONOMY

The following tips not only lead to greater
fuel economy but also reduce air pollution
causing less environmental damage:
• Try to avoid using the car for short

journeys - this will lead to greater fuel
economy and reduce wear on the
engine.

• Plan ahead - choose uncongested

routes, combine car trips and share
cars where possible.

• Drive off as soon as possible after

starting a cold engine - do not leave
the engine idling until it has warmed
up.

• Drive smoothly and efficiently - harsh

acceleration and heavy braking have
a significant effect on fuel
consumption - driving more smoothly
saves fuel.

• Slow down - driving at high speeds

significantly increases fuel
consumption.

• Switch off - sitting stationary is zero

miles per gallon, switch off the engine
when it is safe to do so.

• Unnecessary weight - do not carry

unnecessary weight and remove roof
racks when not in use.

• Regular servicing keeps the engine at

best efficiency.

• Ensure that tires are inflated to the

correct pressure for the journey.

• Use air conditioning and all vehicle

electrical devices sparingly - all
increase fuel consumption.

• Check your fuel consumption - it will

help you get the most from your car
and any significant change in
consumption may indicate a vehicle
fault.

FUEL REQUIREMENTS

All vehicles are fitted with a catalytic
system and can only use unleaded fuel.

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.

The preferred fuel should have an octane
rating of at least 95 RON (Research
Octane Number) and a minimum
anti-knock index (AKI) of 91.

Super Green Plus 98 RON unleaded fuel
(where available) may be used as an
alternative to the standard 95 RON
unleaded fuel.

Some countries have only 91 RON fuel
available. The vehicles in these countries
are specially calibrated to use this 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.