2021 CITROEN C5 AIRCROSS recommended oil

189
F Lift the safety catch and raise the bonnet.
F
U
nclip the stay from its housing and place it
in the support slot to hold the bonnet open.
Closing
F Take the stay out of the support slot.
F C lip the stay in its housing.
F

L
ower the bonnet and release it near the
end of its travel.
F

P
ull on the bonnet to check that it is locked
c o r r e c t l y.
Because of the presence of electrical
equipment under the bonnet, it is
recommended that exposure to water
(rain, washing, etc.) be limited.
Engine compartment
These engines are examples provided as
a guide.
The locations of the following elements may vary:
-

A
ir filter.
-

E
ngine oil dipstick.
-

E
ngine oil filler cap.
-
P

riming pump.
-
D

egassing screw.
Petrol engine
Diesel engine
1. Screenwash fluid reservoir.
2. Engine coolant reservoir.
3. Brake fluid reser voir.
4. Battery/Fuses. The Diesel fuel system operates under
very high pressure.
All work on this circuit must be carried out
only by a
CITROËN dealer or a qualified
workshop.
5.
Remote earth point (-).
6. Fusebox.
7. A i r f i l t e r.
8. Engine oil filler cap.
9. Engine oil dipstick.
10. Priming pump*
11. Degassing screw*.
*
D
epending on engine.
Checking levels
Check all of the following levels regularly in
accordance with the manufacturer's service
schedule. Top them up if required, unless
otherwise indicated.
If a
level drops significantly, have the
corresponding system checked by a
CITROËN
dealer or a
qualified workshop.
The fluids must comply with the
manufacturer's requirements and with the
vehicle's engine.
7
Practical information

190
Check using the dipstick
The location of the dipstick is shown in the
corresponding underbonnet layout view.
F
T
ake the dipstick by its coloured grip and
pull it out completely.
F

W
ipe the end of the dipstick using a clean,
non-fluffy cloth.
F

R
efit the dipstick and push fully down, then
pull it out again to make the visual check:
the correct level is between marks A and B .A = MA X
B = MIN
Oil grade
Before topping up the oil or changing
the oil, check that the oil is the correct
grade for your engine and conforms to the
manufacturer's recommendations.
Topping up the engine oil level
The location of the oil filler cap is shown in the
corresponding underbonnet layout view.
F
A
dd oil in small quantities, avoiding any
spills on engine components (risk of fire).
Do not star t the engine if the level is:
-

A
bove mark A
, then contact a CITROËN
dealer or a qualified workshop.
-
B
elow mark B
, then top up the engine oil
immediately.
Take care when working under the bonnet,
as certain areas of the engine may be
extremely hot (risk of burns) and the
cooling fan could start at any time (even
with the ignition off).
Used products
Avoid prolonged contact of used oil or
fluids with the skin.
Most of these fluids are harmful to health,
and may be very corrosive.
Do not discard used oil or fluids into
sewers or onto the ground.
Empty used oil into the containers
reser ved for this purpose at a
CITROËN
dealer or a
qualified workshop.
Engine oil
The level is checked either using the
oil level indicator in the instrument
panel when the ignition is switched
on, for vehicles equipped with an
electric gauge, or using the dipstick.
The vehicle must be parked on a level sur face,
w ith the engine stopped for more than 30 minutes.
It is normal to top up the oil level between two
ser vices (or oil changes). It is recommended
that you check the level, and top up if
necessary, every 3,000
miles (5,000 km).
In order to maintain the reliability of the
engine and emissions control system,
never use additives in the engine oil.
Practical information

192
Versions equipped with Stop & Start are
fitted with a 12 V lead-acid battery of
specific technology and specification.
Its replacement should be carried out
only by a
CITROËN dealer or a qualified
workshop.
Cabin filter
Depending on the environment and
the use of the vehicle (e.g. dusty
atmosphere, city driving), change it
twice as often if necessar y .A clogged cabin filter may have an
adverse effect on the per formance of
the air conditioning system and generate
undesirable odours.
Air filter
Depending on the environment and
the use of the vehicle (e.g. dusty
atmosphere, city driving), change it
twice as often if necessar y
.
Oil filter
Change the oil filter each time the
engine oil is changed.
Particle filter (Diesel)
or The start of saturation of the particle
filter is signalled by the temporary
illumination of this warning lamp,
accompanied by a
message warning
of the risk of the filter clogging up.
As soon as the traffic conditions permit,
regenerate the filter by driving at a
speed of at
least 37
mph (60 km/h) until the warning lamp
goes off.
AdBlue (BlueHDi)
An alert is triggered once the reser ve level is
reached.
For more information on the AdBlue range
indicators , refer to the corresponding section.
To avoid the vehicle being immobilised as per
regulations, you must top up the AdBlue tank.
For more information on the Supply of
AdBlue , refer to the corresponding section.
Checks
Unless otherwise indicated, check these
components in accordance with the
manufacturer's service schedule and according
to your engine.
Other wise, have them checked by a
CITROËN
dealer or a
qualified workshop.
Only use products recommended by
CITROËN or products of equivalent quality
and specification.
In order to optimise the operation of
components as important as those in the
braking system, CITROËN selects and
offers very specific products.
12 V battery
The battery does not require any maintenance.
However, check regularly that the terminals
are correctly tightened (versions without quick
release terminals) and that the connections
are clean.
For more information on the precautions to
take before any work on the 12 V batter y,
refer to the corresponding section.
Practical information