2007 Alfa Romeo 166 coolant

202 PROGRAMMED
MAINTENANCE
PRECAUTIONS
Many moving parts, high voltage cables
and parts that reach high temperatures
which may cause serious injury to unquali-
fied persons are located in the engine
compartment.
The following precautions should there-
fore be taken:
– Switch off the engine and wait until
it cools.
– Be particularly cautious when work-
ing near the engine cooling fan as this
may cut in unexpectedly on the basis of
the engine coolant temperature.
– Do not smoke or use naked flame.
– Always keep a fire extinguisher to
hand.
– Do not use the jack supplied with the
car for checking underneath it.Vehicle maintenance
should be entrusted to
an Alfa Romeo Author-
ized Service. For interventions of
routine maintenance and small
repairs you wish to carry out
your-self, make sure you always
have the proper equipment, gen-
uine Alfa Romeo spare parts and
the necessary liquids; do not,
however, carry out these opera-
tions if you have no experience.
The jack with which the
vehicle is fitted must on-
ly be used when changing a wheel.
All other operations where the ve-
hicle must be lifted require the use
of specific procedures and should
be carried out by Alfa Romeo Au-
thorized Services.
WARNING
Ensure that scarves, ties
and loose clothing cannot
get caught by moving parts.
WARNING
DANGER-SERIOUS INJU-
RY. When carrying out
checks or maintenance operations
in the engine compartment, take
special care not to bump the head
on the raised bonnet.
WARNING
Never smoke when
working in the engine
compartment: inflammable gas and
vapours may be present which con-
stitute a fire hazard.
WARNING

205
thousands of kilometres 20 40 60 80 100 120 140 160 180
Change fuel filter (diesel versions)•••••••••
Change air cleaner cartridge (petrol versions)••••
Change air cleaner cartridge (diesel versions)•••••••••
Check and top up, if required, fluid levels (brakes/hydraulic clutch, power steering,
windscreen washer, battery, engine coolant, etc.)•••••••••
Replacement of timing gear drive belt (*) and Poly-V accessory drive belt•
Replacement of spark plugs (petrol versions)•
Check operation of engine control systems (through diagnostics socket)••••
Check manual gearbox and differential oil level (petrol versions)••
Change engine oil and oil filter •••••••••
Change brake fluid (or every 24 months)•••
Check dust/pollen filter•••••••••
(*)Or every 4 years in harsh conditions (cold climates, stop and go city traffic).
Or every 5 years, regardless of the mileage.

206 ANNUAL INSPECTION
PLAN
An annual inspection plan has
been established for cars that cov-
er less than 20,000 km a year
(e.g. 10,000 km). It consists of
the following:
– Checking the condition/wear of tyres,
and adjusting pressure (including the com-
pact spare wheel, where applicable).
– Checking the lighting system (head-
lights, turn indicators, hazard warning
lights, boot light, passenger compart-
ment, warning lights of instrument panel,
etc.).
– Checking the working order of the
windscreen wiper-washer and adjusting
the nozzles.
– Checking the positioning/wear of the
windscreen wipers.
– Checking the condition and wear of
the front brake pad.– Sight inspect the conditions of: en-
gine, gearbox, transmission, pipes and
hoses (exhaust - fuel - brakes), rubber
parts (boots, sleeves, bushes, etc.).
– Check for bonnet and boot lock clean-
ness, lever cleanness and lubrication.
– Check battery charge and fluid level
(electrolyte).
– Visually checking the condition of the
belts and various controls.
– Checking and topping up, if neces-
sary, the level of liquids (coolant, brake
fluid, windscreen washer fluid, battery
etc.).
– Change engine oil and oil filter, if re-
quired.
– Check and replace pollen filter, if re-
quired.
– Check and replace air cleaner, if re-
quired.
ADDITIONAL OPERATIONS
Every 1000 kmor before long jour-
neys check and if necessary top up:
– the engine coolant fluid level
– brake fluid/hydraulic clutch control
fluid level
– power steering fluid level
– windscreen washer and headlamp
washer fluid level
– tyre pressure and conditions.
– check light system operation (head-
lights, direction indicators, hazard lights,
etc.).
– check windscreen wiper/washer op-
eration and windscreen/rear window
blade position/wear.
Every 3000 kmcheck the level of
the engine oil and top up if necessary.
Every 5000 km(only for fuel oil en-
gines): drain the condensation water
from the filter. You are recommended to
use products of the FL Selenia, de-
signed and developed expressly for Alfa
Romeo cars (see the table “Fluids and lu-
bricants” in the Technical specifications”
chapter).

209
3.2 V6 24V version
fig. 1
k
1)engine oil
π
2)brake and
clutch fluid
+
3)windscreen
washer fluid
n
4)engine coolant
fluid
∂
5)power steering
fluid
A0D0099m
CHECKING LEVELS

210
JTD 20V Multijet version
fig. 2
k
1)engine oil
π
2)brake and
clutch fluid
+
3)windscreen
washer fluid
n
4)engine coolant
fluid
∂
5)power steering
fluid
A0D0112m

213
Never add oil with
characteristics (classifi-
cation, viscosity) which
are different from those of the
oil already in the circuit.
Remember that when the
engine is warm the elec-
tric fan, which is operated on the
basis of the engine coolant tem-
perature, could cut-in automatical-
ly and cause injury.
WARNING
Never exceed the MAX
level when topping up or
changing engine oil. Too much en-
gine oil would cause it to be tak-
en in through the blow-by cylinder.
For JTD versions this can rapidly in-
crease the engine speed (no longer
controllable, in this case, by re-
leasing the accelerator pedal and
moving the ignition key to STOP)
and damage to the engine with the
risk of seizing or fire.
WARNING

214
The antifreeze mixture
contained in the cooling
circuit guarantees pro-
tection down to –35°C.
CHECKING AND TOPPING-UP
ENGINE COOLANT
(fig. 7)
Periodically check that the level of fluid
in the expansion tank when cold and with
the car on level ground, is between
“MIN” and “MAX”.
If the level is too low, unscrew cap (A)
on the expansion tank and top-up. Top up only with the
same fluid contained in
the cooling circuit.
A0D0100m
fig. 7
The cooling system is
pressurised. If necessary
replace the cap only with another
original one, otherwise the effi-
ciency of the system could be com-
promised.
WARNING
To avoid being burnt,
when the engine is hot do
not remove the cap from the ex-
pansion tank.
WARNING

257
A -Speedometer
B -Mileage recorder with double meter
display (total and trip)
C -Check panel
D -Rev. counter
E -Fuel gauge and reserve warning light
F -Engine coolant temperature gauge
and maximum temperature warning
light
G -Warning lights
H -Electronic automatic gearbox display
IMPORTANT Depending on the trim
levels, the dial of the instruments may be
either light grey or black, with green or
red light.CONTROLS
LIGHTS SWITCH (fig. 3)
The device and services controlled by
the levers on the steering wheel can only
be activated when the ignition key is in
theMARposition (except the parking
lights which can always be switched on).Lights switched off
When the pointer on the knurled ring
(A) is opposite the symbol O, the exter-
nal lights are switched off.
Sidelights
The sidelights are switched on by turn-
ing the knurled ring (A) from Oto
6.
The
3warning light on the instru-
ment panel will come on at the same
time.
Dipped-beam headlights
These are switched on by turning the
knurled ring (A) from
6to2.
Parking lights
When the pointer of the switch (A) cor-
responds with the
Fsymbol, the side
lights stay on regardless of the position of
the ignition key.
fig. 3
A0D0148m