2007 Alfa Romeo 156 differential

GETTING TO KNOW YOUR CAR
181
ASR FUNCTION (ANTISLIP
REGULATION): GENERALThe ASR system integrates the VDC sys-
tem controlling the vehicle drive and com-
ing into operation automatically each time
one or both driving wheels skid.
Two different control systems are activated,
depending on the skidding conditions:
– If skidding concerns both driving wheels,
because it is caused by the excessive power
transmitted, the ASR system cuts in reduc-
ing the power transmitted by the engine.
– If skidding concerns only one driving
wheel, the ASR system cuts in automatically
braking the skidding wheel, with an effect
similar to that of a self-locking differential.The action of the ASR system is particularly
helpful under the following conditions:
– Skidding of the inner wheel on a bend,
due to the effect of the dynamic changes of
the load or over-accelerating.
– Excessive power transmitted to the
wheels, also in relation to the conditions of
the road surface.
– Acceleration on slippery, snowy or icy
surfaces.
– In the case of loss of grip on a wet sur-
face (aquaplaning).
CUTTING IN OF THE VDC
SYSTEMThe cutting in of the VDC system is indi-
cated by the flashing of the warning lightá
on the instrument cluster, to inform the
driver that the car is in critical conditions of
stability and grip.
TURNING ON THE ASR
FUNCTIONThe ASR function turns on automatically
each time the engine is started.
When travelling it is possible to switch the
system off and on again pressing the switch
(A-fig. 171
) on the centre console.
Function disconnection is shown by the led
on the ASR button being turned on. If the
function is turned off while travelling, it will
turn on again automatically the next time
the engine is started.
WARNING When driving on snow, with
snow chains fitted, if may be helpful to switch
off the ASR function: in these conditions in
fact, skidding of the driving wheels when
moving off helps to obtain better traction.
fig. 171
A0B0557m

CAR MAINTENANCE
250
20 40 60 80 100 120 140 160 180
Thousand of km
Change fuel filter (diesel versions only)Change air cleaner cartridge (petrol engines)Change air cleaner cartridge (diesel versions only)
Check and if necessary top up fluid levels (brakes, hydraulic clutch, power steering, windscreen wiper, battery, engine coolant, etc..) Check and if necessary top up Selespeed oil level (2.0 JTS version)Replacement of timing drive belt (*) and Poly-V accessory drive beltReplacement of counter-rotating shaft drive belt (only 2.0 JTS)Replacement of spark plugs (T.SPARK 16V, 2.0 JTS and 2.5 V6 24V versions) Check operation of engine control systems (through diagnosis)Check gearbox and differential oil levelCheck automatic gearbox oil level (2.5 V6 24V version)Change engine oil and oil filterChange brake fluid (or every 2 year)Replacement of dust/pollen filter
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●
●
●●●●
●●
●●●●●●●●●
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●●●
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(*) Or every 3 years in harsh conditions (cold – hot climates, stop and go city traffic, dusty areas or roads covered with sand and/or salt)
Or every 5 years, regardless of the mileage.

CAR MAINTENANCE
260
Do not add oil with dif-
ferent characteristics than
those of the oil already in
the system.
The oil level should never exceed the
MAXmark on the dipstick on the COLD
side, if the level is checked cold and on the
HOTside if the level is checked with the
gearbox/differential unit hot.
fig. 14
A0B0163m
The level should be between the MINand
MAXmarks of the sector identified by the
word COLD(+40°C).
WARNINGAfter long journeys with the
gearbox/differential unit very hot, the oil
level should be between the MINand
MAXmarks of the sector identified by the
word HOT(+80°C).
Q-SYSTEM AUTOMATIC
GEARBOX OIL LEVEL
(fig. 14)
The oil should be checked with the engine
idling and at operating temperature, the
gearshift lever at position Pand the car on
level ground.
To check the level, proceed as follows:
– remove the dipstick (A);
– clean it with a clean lint free cloth;
– insert the dipstick in its housing pushing
well down to the bottom;
– remove it to check.
If the oil level is near or below the MIN
mark, add TUTELA GI/2oil through the
dipstick housing.
When the engine is very
hot, take care when work-
ing inside the engine compartment
to avoid burns. Remember that
when the engine is hot, the fan may
cut in: danger of injury.
WARNING
Used gearbox oil contain
pollutants. Contact Alfa
Romeo Authorized Services to
have the oil changed as these are
equipped to dispose of the waste
oil respecting the environment and
laws.
WARNING

TECHNICAL SPECIFICATIONS
319
2.0 JTS
63
●9 ●6.9
4.4 ◆2
–
–
–
2,5
5.32.0 JTS
Selespeed63 ●9 ●6.9
4.4 ◆2
–
0.6
–
2,5
5.3 1.8
T.SPARK
63
●9 ●6.9
4.4 ■2
–
–
–
2,5
5.3 1.6
T.SPARK
63
●9 ●6.9
4.4 ■2
–
–
–
2,5
5.32.5 V6
24V
63
●9 ●9.2
5.9 ■–
2
–
–
2,5
5.3JTD
63
❍9 ❍6.1
4.5 ❑2
–
–
–
2,5
5.3 2.5 V6
24V
Q-System63 ●9 ●9.2
5.9 ■–
–
–
3.8
2,5
5.3
REFILLING
JTD 20V
Multijet
63
❍9 ❍7.25
5 ❑
3.1
–
–
–
2,5
5.3
JTD 16V
Multijet
63
❍9 ❍6.1
4.5 ❑
2
–
–
–
2,5
5.3
Fuel tank: litres
– including a reserve of litresEngine cooling system litres
Oil sump and filter litresMechanical gearbox/differential litres
Mechanical gearbox/differential litres
Selespeed gearbox litresactuation hydraulic system
Q-System litresautomatic gearbox
Windscreen washer and
rearscreen washer fluid
reservoir: litres– with headlamp washer litresSpecified fuels
Recommended products
●Unleaded petrol at not
less than 95 R.O.N
(specification EN228)❍Diesel fuel for motor
vehicles (Specification EN590)Mixture of distilled water and
PARAFLU 11(blue) at 50% or
PARAFLU UP(red) at 50%■ SELENIA 20K for Alfa
Romeo◆SELENIA RACING❑ SELENIA WR
TUTELA CAR
ZC 75 Synth
TUTELA CAR MATRYX
TUTELA CAR CS SPEED
TUTELA GI/2
Mixture of water and liquid
TUTELA PROFESSIONAL
SC 35
■
For decidedly sportive use of the car, fully synthetic SELENIA RACING
SAE
10W-60 engine oil is recommended.
For use in particularly harsh weather conditions SELENIA PERFORMER MULTIPOWER
SAE
5W-30 engine oil is recommended.

TECHNICAL SPECIFICATIONS
321
UseLubricants and greases
for transmissionsBrake fluidProtective agent for radiatorsAdditive for fuel oil
Windscreen/
rearscreen/headlampwasher fluid
(*) IMPORTANTDo not add or mix with fluids with specifications other than the specified ones.Quality features of fluids and lubricants
for correct vehicle operation
Synthetic-based engine oil, SAE 75W-80 EP grade that passes API GL5
and MIL-L-2105 D Lev specifications
SAE 75W-85 completly synthetic engine oil.
Meets API GL 4 and ZF TE ML06 (B&C) LEVEL, ALLISON C4 specifications
“ATF DEXRON II D LEV”, type oil
“ATF DEXRON III” type specific oil
“ATF DEXRON II D LEV”, SAE 10W type oil
Lithium-soap-based grease with molybdenum bisulphate.
Consistency NLGI 2
FMVSS n° 116 DOT 4, ISO 4925, SAE J1704,
CUNA NC 956-01 synthetic fluid
Protective with antifreeze action, blue color, based on inhibited monoethylene
glycol, CUNA NC 956-16
Protective with antifreeze action, red colour, based on inhibited monoethylen
glycol, with O.A.T.-based organic formula, that passes CUNA NC 956-16,
ASTM D 3306 specifications
Additive for fuel oil with protective action for Diesel engines
Mixture of spirits and surface-active agents CUNA NC 956-11Recommended fluids
and lubricants
TUTELA CAR
ZC 75 Synth
TUTELA CAR
MATRYX
TUTELA GI/2
TUTELA CAR
CS SPEED
TUTELA GI/A
TUTELA MRM 2
TUTELA CAR TOP 4
for Alfa Romeo
PARAFLU 11 (*)
or
PARAFLU UP (*)
DIESEL MIX
TUTELA
PROFESSIONAL
SC 35
Applications
Mechanical gearbox and
differential
Mechanical gearbox and
differential for high
temperatures
Automatic gearbox
Selespeed transmission
electrically-operated
electrohydraulic drive
Hydraulic power steering
C.V. joints
Hydraulic brake and
clutch control
Cooling ducts
Percentage:
50% down to –35°C
To be mixed with the fuel
oil (25 cc per 10 litres)
To be used neat
or diluted