engine OPEL GT 2012 Service Manual

164 Self-help, vehicle care
Locks
The locks are lubrica te d with a high-grade
lock cy lind er gre ase at the factory. O pe l
L oc k Cy lind er Gre ase pre vents the locks
f r o m f r ee z i ng up . On l y u s e d e - i c i ng a g en t s
in eme rgencie s, a s they hav e a de greas ing
e ffe ct and will im pair the function of the
locks. After using a de-icing agent, have
the lock s re -grease d by a workshop.
E ng ine compar tme nt
Areas of the engine compartme nt that are
painted in the same colour as the vehicle
must be looked after lik e any other p ainted
surface.
It is adv isable to was h th e e n gin e
compartme nt be fore and afte r winte r and
pre se rve it with wax. Cove r alternator and
brake /clutch fluid res e rv oir with plastic
sheets before washing the engine.
W hen was hing the e ngine with a s te am-je t
cle ane r, do not d ire ct the ste am-jet a t
components of the Anti-lock Brake System
(ABS), a ir conditioning syste m, climate
control sy ste m or the b elt drive and its
components . Prote ctive wax that has be en ap plied is
also re move d during the e ngine wash. F or
this reas on, have the e ngine, brak e s ys te m
components in the engine compartment,
axle com pone nts with ste ering, body parts
and cavitie s thoroughly pre se rved by a
work shop using protective wax .
An engine w ash ca n be p erformed in the
spring in orde r to remov e dirt that has
adhere d to the e ngine comp artment,
whic h may also have a high s alt content.
Check protectiv e w ax la yer and ma ke good
if necessary.
D o no t u s e hi g h - p r e ss u r e j e t cl ea ne r s.Underbod y
Your v ehicle ha s a durable protective
coating in the whee l arches (includ ing the
longitudinal mem bers ), which provide s
pe rmanent prote ction a nd need s no
s p e c ia l m a i n t e n a n c e .
O n ve hi cl e s w h ic h a r e w a sh ed f r equ e nt l y
in automatic ca r washe s with unde rbody
was hing facility, the protective coating
ma y be impaire d by dirt-diss olving
a dd i ti v es , s o ch eck t h e u n der b od y a f t er
was hing and have it wax ed if ne ce ss ary.
Be fore the sta rt of the cold we ather se ason,
che ck the c oa ting and, if ne ces s ary, have it
re stored to perfe ct condition.
C aution – com mercially available bitumen/
rubbe r m aterials can damage the coating .
We recommend that you have underbody
work carrie d out by a workshop, who
knows the p rescrib ed materials and has
experience in the use thereof.
The underbody should be washed
following the e nd of the cold weathe r
s eas on to remov e any dirt adhering to the
underbody since this may also contain salt.
Check p rotective wax coa ting and, if
nec essary , have it restored to perfec t
condition.

16 5Service, maintenance
Service, maintenanceEuropean service intervals
Main Se rv ice
D ue e ver y 30 ,0 0 0 k m ( 2 0, 00 0 m i l es ) o r
1 year, whicheve r occurs first.
In ternation al service intervals
Inte rim S erv ice
D ue e ver y 15 ,0 0 0 k m ( 1 0, 00 0 m i l es ) .
Main Se rv ice
D ue e ver y 30 ,0 0 0 k m ( 2 0, 00 0 m i l es ) o r
1 year, whicheve r occurs first.
Engine oil life monitor - se e page s 6 3 , 6 9 ,
151.
Confirmations
C onfirmation of Se rvice is re corded in the
s pace s p rov ided in the Se rvice and
W arranty Bookle t. The date and kilome tre/
mile age reading is comp leted with the
s tamp a nd signature of the Se rvicing
Workshop.
Mak e sure that the Se rvice and W arranty
Bookle t is com plete d correctly as
continuous proof of se rvice is e ss e ntial if
any warranty or goodwill claim s a re to be
me t, and is a ls o a benefit w he n you come
to sell the ve hicle .
Service plan
The European s erv ice s ched ule is valid for
the following countries:
A n do rra, A u s tria, Belgiu m, Cy prus ,
C zech Republic, Denmark, Estonia,
Finla nd, Fra nce, Germany, Greece,
Gre enland, H ungary , Ice land, Ireland, Italy,
Latvia, Lithuania , Lux em bourg, Malta,
The Nethe rla nds, Norway, Poland,
P o rtug al, Slo va kia, S lov en ia, Spain ,
S wede n, Switze rland, Unite d Kingdom.
F or all rem aining countries the
Inte rnational s ervice s chedule applies . Eu ro pe an se rvice sc he du le ... .... .... ..... 16 6
In tern atio n al s ervice s che du le .. .... ..... 16 8
A dditio n al s ervicin g. ..... .... ..... .... .... ..... 17 0
Re commende d fluids , and lubricants 17 0

166 Service, maintenanc e
Euro pean service schedule
(Opel GT - Z 20 NHH)
⊕Add it iona l o per at ions.
o Und er extreme o peratin g cond itions a nd if req uired by country-sp ecific co nditio ns, the in terva ls are red uced.
S ervice operations
by y ear 1)
km ( x 1000)1)
miles ( x 1000)1)
1)Wh ic h e v e r o cc u r s fi rs t.
1
30
202
60
403
90
604
120
805
150
1006
180
120
C ontrols , lighting , s igna lling equipme nt and airbags : v isual che ck
s tee ring lock and ignition lock: che ckxxxxxx
Re mote control batte ries: re place Eve ry 2 y ears
Windsc reen w ipers, windscreen washer system: check, correct x x x x x x
C oolant le ve l and antifree ze: check, correct
Hoses: check for tightness and secure seatingxxxxxx
Brak e fluid le vel: check, correct x x x
Batte ry te rmina ls: check for sec ure connections a nd battery ey e x x x x x x
Pollen filter: replacexxx
oM o re o f ten f o r wh en du s t, s an d o r po llen is in th e air A gree me nt w ith c us to mer
Air cleaner element: replace
Every 4 yea rs/60 000 k m/40 000 miles
⊕Spark plugs: replace Every 4 yea rs/60 000 k m/40 000 miles
Ribb ed V -be lt: vis ual check x x x
⊕Re place Every 10 years/150 000 km/100 000 miles
Powe r ste ering s ys tem: check for leaks . F luid le vel: check, correct x x x x x x
E ngine oil and oil filter: replac e
2)
2)En gine oil life monitor may indica te a n earlier engine o il an d oil filter ch ang e is neces sary. See p ag es 63, 69, 15 1.
xxxxxx
Parking b ra ke: check and adjus t
W hee l mounting and s us pe ns ion front and re ar, b rake line s, brake pres s ure
hoses, fuel lines a nd exhaust system: visual checkxxx

168 Service, maintenanc e
International service schedule
(Opel GT - Z 20 NHH)
⊕Add it iona l o per at ions.
o Und er extreme o peratin g cond itions a nd if req uired by country-sp ecific co nditio ns, the in terva ls are red uced.
S ervice operations
by year 1)
k m ( x 1000)1)
miles ( x 10 0 0)1)
1)Wh ic h e v e r o cc u r s fi rs t.
15
101
30
2045
302
60
4075
503
90
60
C ontrols , lighting , s igna lling equipme nt and airbags : v isual che ck
s tee ring lock and ignition lock: che ckxx xx xx
Re mote control batte ries: re place E very 2 ye ars
Windsc reen w ipers, windscreen washer system: check, correct x x x x x x
C oolant le ve l and antifree ze: check, correct
Hoses: check for tightness and secure seatingAnnually
Brak e fluid le vel: check, correct x x
Battery termina ls: check for sec ure connections a nd battery ey e Annually
Pollen filter: replace Eve ry 2 y ears /6 0 00 0 km/ 4 0 0 0 0 miles
oMore often for when dust, sand or pollen is in the air Annually/15 000 km/10 000 m iles
Air cleaner element: replace Every 4 years/60 000 km/40 000 miles
oMore often for when dust or sand is in the air Annually/15 000 km/10 000 m iles
⊕S park plugs : re place Eve ry 4 y ears /6 0 00 0 km/ 4 0 0 0 0 miles
R i bb ed V - be l t : vi s u a l ch eck Eve r y 2 y ea r s /6 0 00 0 km / 4 0 0 0 0 m i l es
⊕Re place Every 10 years/150 000 km /100 000 miles
Power steering system: check for leaks. Fluid level: check, correct Annually
E ngine oil and oil filter: replac e
2)
2)En gine oil life monitor may indica te a n earlier engine o il an d oil filter ch ang e is neces sary. See p ag es 63, 69, 15 1.
xx xx xx
Parking b ra ke: check and adjus t
W hee l mounting and s us pe ns ion front and re ar, b rake line s, brake pres s ure
hoses, fuel lines a nd exhaust system: visual checkEvery 2 years/60 000 km/40 000 miles

170 Service, maintenanc e
Additional servicing
Add itional op era tions ⊕
Additional w ork is work tha t is not req uire d
e very se rvice but can be pe rforme d in
conjunction with a re gular service .
Time allowances for such w ork are not
included in the scope of re gular se rvice s
and will b e charge d for add itionally. It is
more economic if these operations are
pe rforme d as part of a sc he duled se rvice
than having them performe d s eparate ly.
Severe operating conditions o
O perating conditions are clas sifie d as
severe w hen one or m ore of the following
occurs frequently:
zcold starts ,
zstop and go,
ztraile r/carav an towing ,
zgradients and/or high altitudes ,
zpoor road surface s,
zsand a nd dust,
zextreme temperature fluctuations.
Police v ehicles , ta xis and driving s chool
ve hic le s are also cla ss ifie d as ope rating
under sev ere conditions.
U n d e r s e v e r e o p e ra t in g c o nd it i o n s , i t m a y
be nece ss ary to ha ve certain s che duled
service work done more fre quently tha n the
s cheduled inte rvals .
F or exa mple, if f ue l is u se d th at do e s no t
comply with required sta nda rd s, the fuel
filter ma y need m ore frequent draining or
rep la ceme nt and it may also be nece s sary
to change other components more often
(e. g. s park p lugs ).It i s r eco m m en ded t o s eek t e ch n ic a l a dvi ce
on the servicing requirements dependent
on the spe cific ope rating conditions of your
veh icle .
Recommend ed fluid s, and
lu b r ic a n t s
Only use prod ucts that have be en te ste d
and approved . Damage res ulting from the
us e of non-approve d m aterials will not be
covere d by the warranty.
Checking and topp ing up flui ds
se e p age 15 2 .
En g in e oi l
Engine oil is ide ntifie d by its q ua lity and
also its v iscos ity. Q ua lity is more im porta nt
than vis cosity whe n se lecting which engine
oil to us e.
Engine o il quality
E urope an s pe cificat ions
O p el e ng in e o il m e et s cl a s si f i ca t i o n G M - LL -
A-025 and is therefore suita ble for petrol
eng ines.
I nt erna tional s pe cific ations
The above spe cification is v alid only if the
service inte rval is re duced to that shown for
the inte rna tional s erv ice s chedule - s ee
pag e 1 6 5.
Topp ing up e ngine oil
O ils of diffe re nt m anufacturers and bra nds
can b e m ix ed as long as you comply with
the s pecified e ng ine oil criteria (q uality and
vis co s ity ).
N ot eve r y e n g i ne o i l a va il a bl e o n t h e
m a rk et m ee ts t h e qu a l i t y r e qui r e m en t s ,
alway s check the req uire d s pecification
and ra ting is m arked on the containe r.
If e ngine oil of the required quality is not
av ailable, a max imum of 1 litre of AC EA
A3/B4 or A3/B3 grade ma y be used (only
once betwe en e ach oil change ). The
viscosity should be of the correct rating.
9 Warning
O perating m aterials are haz ardous and
mus t be hand led w ith the appropriate
le vel of ca re . I f cons ume d, s ee k me dical
attention immediately. Do not inhale
fumes and avoid s kin contact. K ee p out
of rea ch of childre n. Do not allow
ope ra ting materials to contaminate the
sewag e system, surface water, ground
water or soil. Dispose of empty containers
prope rly . Alway s b ear in m ind that
ope ra ting materials are hazardous to
your hea lth.
GM-LL-A-025: Petrol engines
G M G e n e ra l M o t o rs E u ro p e
LL Lo n g l i f e
A Engine oil quality
sp ecification
02 5 Va lid ity index
ACEA-A3: Petrol engines

17 1Service, maintenance
Use of ACEA A1/B1 and A5/B5 engine oil is
expressly forbidden, since they can cause
long-term e ngine da mage und er ce rtain
ope ra ting conditions.
Engine oil additives
The use of engine oil additives could cause
dam age and invalidate the warranty.
E ng ine oi l vis cos ity
SAE 0W-30, 0W-40, 5W-30 or 5W-40
The SAE vis cosity rating defines the ability
of an oil to flow. W he n cold, oil is more
viscous than when hot.
Multigrad e oil is indicated by two figure s.
The first figure, followe d b y a W, ind ic ates
l ow t em p er a t u r e v i sco s i t y a n d t h e se co n d
figure the high te mpera ture vis cosity.
Coolant and antifreeze
Use antifreeze of recommended
spe cification: silicate -free LL C (L ong L ife
Coolant).
The s ys te m is factory-filled with coola nt
designed for frost protection down to
approx. -2 8 °C . This conce ntration s hould
be m ainta ine d all y ear-round.
Coolant additive s inte nd ed to g ive
additiona l corrosion protection or seal
against m inor le aks can ca us e function
prob lems . L iability for cons eque nce s
re sulting from the use of coola nt a dditives
will be rejec te d.
Brake and clutch fluid
O nly use DO T3 or DO T4 brake fluid.
O ver tim e, brake fluid abs orbs mois ture
which will re duce b raking effe ctivene ss .
T h e br a ke f lu i d sh o u l d t h er e fo r e be
re placed at the s pe cifie d interv al.
Brake fluid should b e stored in a sealed
container to av oid wate r abs orption.
E ns ure it does not becom e contaminate d
with fluids containing mineral oil (oil,
pe trol, clea ne r) as this can damage the
seals and sleeves of the brake system.
9 Wa r nin g
Brake fluid is pois onous !
9 Wa r nin g
Due to its corrosive nature, it must not
come in contact with the paintwork . Flush
any e scap ed b rake fluid w ith p lenty of
water.

Technical da ta17 3
Engine identification: etc he d into the
e ngine oil filte r housing on the cylinder
block.The V IN and axle loading information labe l
is locate d on the B-pilla r, vis ible w ith the
driver’s door open.
Information on labe l:Vehicle identifica tion da ta
The tyre a nd loading informa tion lab el is
locate d on the B-pillar, vis ib le with the
driver’s door open. See pag e 126.
Information on label:
zSpe cifie d occupant s ea ting positions
zMaximum vehicle capacity we ig ht
zVehic le identification number (VIN )
zTyre pressure, front a nd rear
zOriginal e quipment ty re s ize
1. Manufac turer
2. Type approval numbe r
3. Vehic le identification number
4. G r os s v e hi c l e w e i g h t r a t i ng
5. P er m i s si b l e g r o s s t r a i n w e i g h t
6. Maximum permis s ible front axle load
7. Maximum permis s ible re ar axle load

174 Tec hnic al data
The s e rv ice p arts ide ntifica tion labe l is
located in the glove compa rtm ent.
Information on la bel:
zVehicle option code
zVehicle identification number (VIN)
zEnginee ring model numbe r
(v ehicle division, line and body sty le)
zInte rior trim lev el and decor
zExterior (pa int colour) WA num ber
zPaint te chnology
zSpec ia l ord er paint colours a nd numb ers
Coo la n t , oi ls , b r ake / clu tc h f l u id
Use approve d fluids only .
Use of unsuitab le fluids could cause serious
damage to the vehicle . E ngine oils
Information on engine oils is availab le on
pag e 1 7 0.

Technical da ta 175
Engine data
Sale s des ignation
En gin e st a mp
Eng ine identifier code2.0 Turb o
LNF
Z 20 N HH
Numb er of cylinde rs4
Bore dia. (mm )86
Stroke (mm)86
Piston displacement (cm
3) 1998
Engine power (k W)
at rpm 194
5300
Torque (Nm )
at rpm 353
2500-5000
Com pression ratio9.2 : 1
Fuel type
1)
1)St an da rd high- q uality f uels , unlead ed DIN EN 2 28.
Petrol
Octane requirement (RON)
2)3)
un l e a d ed
or un l e a d ed
2)Stan da rd high-quality fuels : S = Sup er (Prem iu m), SP = Sup er Plus (Premium P lu s); va lue p rinted in bold: reco mmen ded fuel.3)Knock control system automatically adjusts ignition timing according to type of fuel used (octane number).
95 (S)
98 (SP)
M a x . p e r m i ss i bl e en g i n e sp e ed,
continuous (rpm) ap prox . 6300
O il cons umption (l/1 00 0 km)0.6

176 Tec hnic al data
Performa nce
(approx. km/ h / mph)
Engine
1)
1)Sa l e s de si g nat i on – se e pa ge 1 7 5 .
Z 20 NHH
Max imum s pee d
2)
Manual tra nsmission
2)The ma xim um s peed ind ica ted is achieva ble a t kerb weig ht. Op tiona l eq uipm ent cou ld red uce th e s pecif ied ma ximum s peed of the vehi cl e.
229/142