Jaguar XK. Service manual - part 51

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Maintenance

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1. Engine oil filler cap (Black)

2. Engine oil dipstick (Yellow)

3. Brake fluid reservoir cap 
(Yellow)

4. Power steering fluid reservoir 
cap (Black)

5. Coolant reservoir cap (Yellow)

6. Washer fluid reservoir cap (Blue)

5

6

1

2

4

3

3

E91597

E91600

E91602

E91601

E91603

E91598

E91599

Maintenance

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ENGINE OIL CHECK

Engine oil consumption

A certain amount of oil consumption is 
normal. The rate of consumption will 
depend on the following:
• the quality and viscosity of the oil
• climatic conditions
• the speed at which the engine is 

being operated

• road conditions.

Drivers should expect above normal 
consumption when the engine is new.

Check the oil level regularly with the 
vehicle on flat, level ground.

Check the oil level with the engine 
completely cold.

Checking the oil level

Note: If it is necessary to check the oil 
level when the engine is hot, switch off 
the engine and let the vehicle stand for 
five minutes to allow the oil to drain back 
into the sump. Do not start the engine.

Remove the dipstick 1 and wipe clean 
with a non-fluffy cloth. Replace fully, then 
withdraw the dipstick. If the oil level is 
above the lower of the two dots on the 
dipstick then no additional oil is required.

If the oil level is at or below the lower of 
the two dots, remove the oil filler cap 2 
and add 1.0 litre (1.1 US quart) of oil.

Refit the filler cap and hand tighten 
securely until one click is heard.

CAUTIONS

If the message ENGINE OIL 
PRESSURE LOW is displayed, 
stop the engine as soon as it is safe 

to do so and seek qualified assistance. 
Do not start the engine until the cause 
has been identified and rectified.

Your vehicle's warranty may be 
invalidated if damage is caused by 
the use of improper engine oil. Low 

quality or obsolete oils do not provide the 
protection required by modern, high 
performance engines. Failure to use an 
oil that meets the required specification 
could cause excessive engine wear, a 
build up of sludge and deposits and 
increased pollution. It could also lead to 
engine failure.

Do not use oil additives of any type 
as engine damage could occur. 
Use only specified lubricants.

2

1

E91657

209

Maintenance

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Recommended engine oil

Jaguar recommends

Engine oil specification

API SM and ILSAC GF-4. 
When topping up between 
oil changes, make sure that 
you use oil that has the 
correct quality level (API 

service) and viscosity grade.

Note: For maximum fuel economy, 
5W-30 oil is recommended.

Engine oil temperature ranges

For climates ranging from - 35°C (- 31°F) 
to + 50°C (+ 122°F), the following oil 
viscosities may be used:

0W-30 will protect from - 35°C (- 31°F) to 
+ 35°C (+ 95°F).

5W-30 (preferred) will protect from -30°C 
(-22°F) to +35°C (+95°F).

0W-40 will protect from - 35°C (- 31°F) to 
+ 50°C (+ 122°F).

5W-40 will protect from -30°C (-22°F) to 
+50°C (+122°F).

ENGINE COOLANT CHECK

Check the level only when the engine is 
cold. The coolant level should be 
between the MAX and MIN indicators.

WARNINGS

It is unsafe to run the engine in an 
overheated condition.

The radiator cooling fans may 
continue to run after the ignition 
has been switched off but will 

automatically switch off when the engine 
has cooled sufficiently.

Do not remove the coolant 
reservoir filler cap while the 
engine is hot. If it is essential, then 

protect your hands against escaping 
steam. Slowly turn the cap 
counterclockwise to allow the steam 
pressure to escape completely before 
removing the cap.

CAUTION

If persistent coolant loss is noticed, 
seek qualified assistance 
immediately.

WARNINGS

E91658

Maintenance

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If the message centre displays the 
message ENGINE OVERHEATING, pull 
over and allow the engine to idle for five 
minutes and then switch off for ten 
minutes. Switch on, and provided that the 
warning does not re-occur, continue your 
journey avoiding harsh acceleration. 
Seek qualified assistance as soon as 
possible.

Topping up the coolant

Top up with a mixture of 50% water and 
50% antifreeze until the coolant is 
between the MAX and MIN.

Refit the filler cap and hand-tighten 
securely until one click is heard.

Antifreeze

Antifreeze contains important corrosion 
inhibitors. The antifreeze content of the 
coolant must be maintained at 50% ± 5% 
all year round (not just in cold conditions). 
To ensure that the anti-corrosion 
properties of the coolant are retained, the 
antifreeze content should be checked 
once a year and completely renewed 
every ten years, regardless of distance 
travelled. Failure to do so may cause 
corrosion of the radiator and engine 
components.

The specific gravity of a 50% antifreeze 
solution at 20°C (68°F) is 1.068 and 
protects against frost down to -40°C 
(-40°F).

Use antifreeze to specification WSS 
M97B44, coloured orange, Extended Life 
Coolant.

WARNINGS

Never remove the filler cap when 
the engine is hot - escaping steam 
or scalding water could cause 

serious personal injury.

Avoid spilling antifreeze onto a hot 
engine - a fire may result.

Unscrew the filler cap slowly, 
allowing the pressure to escape 
before removing completely.

WARNINGS

Antifreeze is poisonous and can 
be fatal if swallowed - keep 
containers sealed and out of the 

reach of children. If accidental 
consumption is suspected, seek medical 
attention immediately.

If the fluid comes into contact with 
the skin or eyes, rinse immediately 
with plenty of water.

CAUTIONS

The use of non-approved 
antifreeze will have an adverse 
effect on the engine cooling system 

and therefore engine durability.

Antifreeze will damage painted 
surfaces; soak up any spillage with 
an absorbent cloth immediately 

and wash the area with a mixture of car 
shampoo and water.