2004 PORSCHE 911 GT3 maintenance

DearOwner,

We would liketothank youforyour purchase ofa
Porsche Sportscar.
Judging bythe caryou have chosen, youareamo-
torist ofaspecial breed,andyou areprobably no
novice whenitcomes toautomobiles.
Remember however,aswith anyvehicle, you
should taketime tofamiliarize yourselfwithyour
Porsche anditsperformance characteristics. Al-
ways drivewithin yourownunique capabilities as
a driver andyour levelofexperience withyour
Porsche. Ensurethatanyone elsedriving your
Porsche doesthesame. Toprevent orminimize
injury, always useyour safety belts.Never con-
sume alcohol ordrugs before orduring theoper-
ation ofyour vehicle.
This Owner's Manualcontains ahost ofuseful in-
formation. Pleasetakethetime toread thismanu-
al before youdrive yournewPorsche. Becomefa-
miliar withtheoperation ofyour Porsche carfor
maximum safetyandoperating pleasure.Thebet-
ter you know yourPorsche, themore pleasure you
will experience drivingyournewcar.
Always keepyourOwner's Manualinthe car, and
give itto the new owner ifyou ever sellyour
Porsche.

2 A
separate Maintenance Booklet
explainshow
you cankeep yourPorsche intop driving condition
by having itserviced regularly.

A separate Warranty andCustomer Informa-
tion Booklet
containsdetailedinformation about
the warranties coveringyourPorsche.

For U.S. only:

If you believe thatyour vehicle hasafault which
could cause acrash, injuryordeath, youshould
immediately informtheNational Highway Traffic
Safety Administration (NHTSA)inaddition to
notifying PorscheCarsNorth America, Inc.
(Porsche CarsN.AJ
If NHTSA receives similarcomplaints, itmay open
an investigation, andifitfinds thatasafety prob-
lem exists inagroup ofvehicles, itmay order are-
call and remedy campaign. However,NHTSAcan-
not become involvedinindividual problems be-
tween youandyour dealer, orPorsche CarsN.A..
To contact NHTSA, youmay either calltheAuto
Safety Hotline toll-free at1-(800)-424-9393
(or 366-0123 inWashington, D.C.area) orwrite
to: NHTSA, U.S.Department ofTransportation,
Washington, D.C.20590. Youcanalso obtain oth-
er information aboutmotor vehicle safetyfromthe
Hotline. Your
carhas thousands ofparts andcomponents
which havebeen designed andmanufactured in
accordance withPorsche's highstandards ofen-
gineering qualityandsafety.

Any alteration ofthe vehicle maynegate or
interfere withthose safety features builtinto
the vehicle.

Your Porsche isintended tobe used inasafe man-
ner obeying thelocal lawsandinthe light ofdriv-
ing conditions facedbyyou, andinaccordance
with theinstructions providedinthis Owner's Man-
ual.

Do not misuse yourPorsche byignoring
those lawsanddriving conditions, orby
ignoring theinstructions inthis manual.
Any alteration ormisuse ofthe vehicle can
lead toaccidents andsevere orfatal
personal injuries.
Regularly checkyourvehicle forsigns of
damage.
Damaged ormissing aerodynamic
components suchasspoilers orunderside
panels affectthedriving behavior and
therefore mustbereplaced immediately.

A
Safety notes!

Motor racing isaterm weassociate withfascina-
tion andemotion.
On the one hand.
On the other hand, there's thetechnology that
makes thisfascination possible.
Your new911 GT3 hasbeen developed withexpe-
rience gained fromthedevelopment anduseof
countless GTvehicles, andhasbeen equipped
with technical preconditions thatfacilitate use
away frompublic roadsinmotor racing.
Depending onuse, itcan bepossible ornecessary
to adapt thevehicle tothe respective conditions.
In the case, itmust always betaken intoaccount
that amodern high-performance sportscarrepre-
sents acomplex systemwithindividual compo-
nents thatarecarefully adjusted towork together
perfectly.
Interfering inthis system isonly anoption ifitcan
be guaranteed thatallofthe components willcon-
tinue towork together inamanner adjusted tothe
actual conditions ofuse. Well-founded specialist
knowledge isnecessary forthis. Youshould seek
advice fromyourauthorized Porschedealer.
Here, youwillreceive information aboutsports
parts available fromPorsche, theirreliability on
public roadsandimportant maintenance notes.

8
Please
bearinmind thatuseonrace tracks sub-
jects allvehicle components toconsiderably more
wear thannormal use,making professional in-
spection andmaintenance aftereach useavital
preconditon forfunctioning andsafety.
Please useonly Original Porsche Partsforyour
car. These partsareavailable fromyourautho-
rized Porsche dealer,whichisconversant withthe
range ofapproved partsandwillbepleased toad-
vise youfurther.
Porsche acceptsresponsibility, inaccordance
with itslegal obligations, forGenuine Porsche
Parts andforparts andaccessories whichithas
approved foryour car.However, theuse ofother
parts oraccessories whichareneither Genuine
Porsche Partsnorapproved byPorsche mayad-
versely affectthesafety ofyour car,andPorsche
can take noresponsibility forany loss ordamage
caused bytheir use.
Even ifthe supplier ofother accessories orparts
is arecognised supplier,thesafety ofyour car
may stillbeaffected ifsuch items areinstalled.
Due tothe large variety ofproducts offeredinthe
accessory marketitis not possible forPorsche to
inspect andapprove everyone.
In addition, pleasenotethattheuse ofreplace-
ment parts which arenotGenuine Porsche Parts
or approved partsorthe use ofaccessories not
approved byPorsche mayalsodetrimentally
affect theWarranties relatingtoyour car.
Technical
modifications

Modifications maybecarried outonyour vehicle
only ifapproved byPorsche.This ensuresthat
your Porsche willremain reliable andsafe todrive
and that itwill notbedamaged asaresult ofthe'
modifications.Your authorizedPorschedealerwill
be pleased toadvise you.

Coverings
~ Donot affix anycoverings (e.g.films or"stone
guards") inthe area ofthe headlights andair
intakes. Damage duetoexcessive temperatures and
abrasion couldresult.

Motor racing

For reasons ofsafety, thebraking system, steer-
ing, running gear,wheels andtires ofyour car
should bechecked afterevery race.
On public highways, therunning gearandrear
spoiler mustbeinthe standard position.

Controls,Instruments
Maintenance, CarCare
Practical Tips,Emergency Service
Vehicle Identification, TechnicalData
Index
13
-110
112 -138
140 -178
180 -189
190 -194

11

SafetyBelts

/!\
Warning!
Always makesureyour andyour passenger's
safety beltsareproperly fastened whilethe
vehicle isin motion.
Failure tofollow safety beltwarnings mayre-
sult inserious personal injury.

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For your andyour passenger's protection,use
safety beltsatall times whilethevehicle isin
motion.

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Use appropriate childrestraint systemsforall
small children.

Proper wearing ofsafety belts

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Safety beltsmust bepositioned onthe body as
to restrain theupper bodyandlapfrom sliding
forward. Improperly positionedsafetybelts
can cause serious personal injuryincase ofan
accident.

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The shoulder beltshould always restonyour
upper body.Theshoulder beltshould neverbe
worn behind yourback orunder yourarm.

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For maximum effectiveness, thelapbelt
should beworn lowacross thehips.

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Pregnant womenshouldposition thebelt as
low aspossible acrossthepelvis. Makesureit
is not pressing againsttheabdomen.
Controls, Instruments
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Belts should notbeworn twisted.

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Donot wear beltsoverrigidorbreakable ob-
jects inor on your clothing, suchaseye glass-
es, pens, keys,etc.asthese maycause injury.

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Several layersofheavy clothing mayinterfere
with proper positioning ofbelts.

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Belts mustnotrub against sharpobjects or
damage mayoccur tothe belt.

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Two occupants shouldneversharethesame
belt atthe same time.

Care andmaintenance

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Keep beltbuckles freeofany obstruction that
may prevent asecure locking.

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Belts thathave been subjected toexcessive
stretch forcesinan accident mustbeinspect-
ed orreplaced toensure theircontinued effec-
tiveness inrestraining you.
The same applies tobelt tensioner systems
which havebeen triggered.
In addition, theanchor pointsofthe belts
should bechecked.

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Ifsafety beltsdonot work properly, seeyour
authorized Porschedealerimmediately.

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Ifthe belts show damage towebbing, bindings,
buckles orretractors, theyshould bereplaced
to ensure safeoperation.
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Donot modify ordisassemble thesafety belts
in your vehicle.

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The belts must bekept clean orthe retractors
may notwork properly
Please observe thechapter "CARCARE IN-
STRUCTIONS" onPage 130.

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Never bleach ordye safety belts.

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Donot allow safety beltstoretract untilthey
are completely dryafter cleaning orthis may
cause damage tothe belt.

Belt tensioner

Depending onthe force ofan impact, fastened
seat belts aretightened inan accident.

The belttensioners aretriggered in:

- Frant andrear impacts

The belttensioners arenottriggered in:

- Side impacts
- Vehicle overturning

Note

The belttensioner systemcanbetriggered only
once; thesystem mustbereplaced afterward.
Work maybeperformed onthe belt-tensioner sys-
tem only byanauthorized Porschedealer.
Smoke isreleased whenthebelt tensioners are
triggered. Thisdoes notindicate afire inthe
vehicle.

~Donot add anyadditional coverings orstickers
to the steering wheelorinthe area ofthe pas-
senger airbagandside airbags. Doingsomay
adversely affectthefunctioning ofthe airbag
system orcause harmtothe occupants ifthe
airbag system shoulddeploy.
~ Donot undertake anywiring forelectrical ac-
cessory equipment inthe vicinity ofthe airbag
wiring harnesses. Doingsomay disable the
airbag system orcause inflation.
~ Ifthe warning lightcomes on,the airbag sys-
tem should berepaired immediately byyour
authorized Porschedealer.

Note

Airbag components (e.g.steering wheel,door
trim) maybedisassembled onlybyanauthorized
Porsche dealer.
When disposing ofaused airbag unit,oursafety
instructions mustbefollowed. Theseinstructions
can beobtained atany authorized Porschedealer.
Q)

Warning light

The central triggering unitmonitors theoperation-
al readiness ofthe airbag system andthewarning
light.
Any malfunctions thatmay occur willbeindicated
by the warning lightsinthe instrument paneland
on-board computer.

~ Inthe following casesyoushould immedi-
ately consult anauthorized Porschedeal-
er inorder toassure theairbag system is
functioning properly:

- Illumination ofthe airbag warning lightduring
travel orrepeated illumination longerthan5
seconds aftertheignition circuitisturned on.
- Illumination failstolight upduring ignition
circuit activation.
If the airbags onthe passenger's sideare
switched offbythe
child restraint system,
orif
an installed childrestraint systemisdetected
when theignition isswitched on,the warning light

flashes
for60seconds whentheignition ison.

A
Danger!
If the light does notflash, theairbags arenot
deactivated andachild restraint system
must notbeinstalled.

~ Have thefault remedied immediately byan
authorized Porschedealer.
Airbag
maintenance

In order toensure long-term functioning, theair-
bag system mustbeinspected byan authorized
Porsche dealerafter4,8and 10years fromthe
date ofmanufacture shownonthe safety compli-
ance sticker, andevery 2years thereafter.

Important information

If you sellyour Porsche, notifythepurchaser that
the vehicle isequipped withairbags, andrefer
them tothe chapter, "AirbagSystems", inthe own-
er's manual (safetyanddisposal rules).
Further information onthe airbag system canbe
found onstickers atthe sun visors, aswell ason
all airbag components.
~ For special recommendations onthe use of
child restraints:
Please observe thechapter "CHILDRE-
STRAINT SYSTEMS" onPage 36.
Controls, Instruments

Brakebooster

The brake booster assistsbraking onlywhen
the engine isrunning.

When thecar ismoving whiletheengine isnot run-
ning, orifthe brake booster isdefective, more
pressure onthe brake pedalisrequired tobring
the car toastop.
Moisture orroad saltonbrakes affects braking.
When thevehicle isdriven onsalted roadsforex-
tended periods, thebrakes shouldbewashed
down thoroughly aboutevery2weeks. Anauto-
matic carwash facilitycannot dothis jobproperly.
Brakes willdry after afew cautious brakeapplica-
tions.

/!\.
Warning!
Driving through watermayreduce thetrac-
tion. Moisture onbrakes fromroadwater, car
wash, orcoating ofroad saltmay affect
braking efficiency.

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Cautiously applybrakes totest brakes after
being exposed.
Brake
wear

Your carhas excellent brakes,butthey arestill
subject towear. Therate atwhich theywear de-
pends onhow thebrakes areused.

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Have thebrake system inspected atthe
intervals recommended inyour Maintenance
Booklet.

•• Warning lightUSA
• Warning lightCanada

If the warning lightsinthe instrument panelandon-
board computer stayonwhen theengine isrun-
ning orcome onwhile driving, thebrake padsare
worn, excessively.

c>
Donot continue tooperate thevehicle.
Have yourauthorized Porschedealerinspect
or replace thebrake pads.
Brake
pads

Wear onthe brake padsandbrake discsdepends
to agreat extent onthe driving styleandthecon-
ditions ofuse and therefore cannotbeexpressed
in actual milesonthe road.
The high-performance brakesystem isdesigned
for optimal braking effectatall speeds andtem-
peratures.
Certain speeds, brakingforcesandambient
conditions (suchastemperature andhumidity)
therefore mightcause "brake noises".

New brake padsorlinings

New brake padsandbrake discshavetobe "bro-
ken i",and therefore onlyattain optimal friction
when thecar has covered severalhundred miles

or km.

The slightly reduced brakingabilitymustbecom-
pensated forbypressing thebrake pedalharder.
This alsoapplies whenever thebrake padsand
brake discsarereplaced.
Controls, Instruments
43

Maintenance,CarCare

Caution 112
Coolant Level 113
Engine Oil 114
Engine OilLevel 115
Engine OilRecommendation 117
Brake FluidLevel 119
Fuel Economy 120
Fuel Recommendations 122
Portable FuelContainers 123
Emission ControlSystem 124
Fuel Evaporation Control 126
Washer Fluid 126
Power Steering 127
Air Filter 128
Particle Filter 128
Manual Transmission Oil 128
Wiper Blades 129
Car Care Instructions 130
Maintenance, CarCare

Exercise ExtremeCautionwhen
Working onyour Vehicle

/!\
Warning!
Ignoring thefollowing instructions may
cause serious personal injury.

~ The engine compartment ofany motor vehicle
is apotentially hazardous area.Ifyou arenot
fully familiar withproper repairprocedures, do
not attempt theadjustments describedonthe
following pages.
This caution appliestothe entire vehicle.
~ Only work onyour vehicle outdoors orinawell
ventilated area.
~ Ensure thatthere arenoopen flames inthe
area ofyour vehicle atany time when fuel
fumes mightbepresent. Beespecially cau-
tious ofsuch devices suchashot water heat-
ers which igniteaflame intermittently.
~ Before working onany part inthe engine com-
partment, turntheengine offand letitcool
down sufficiently. Hotengine compartment
components canburn skinoncontact.
~ Bealert andcautious aroundengineatall
times whiletheengine isrunning.
If work hastobe performed withtheengine
running, alwayssetthe parking brake,and
make suretheshift lever isinneutral position.

1
Maintenance, CarCare ~
Inparticular, bevery careful toensure that
items ofclothing (ties,shirt, sleeves etc.),
jewelry, longhair,hand orfingers cannotget
caught inthe engine-compartment blower,fan,
belts orother moving parts.
The radiator andradiator fansareinthe front
of the car.
The engine-compartment blowerismounted
on the engine compartment lid.
The fans canstart orcontinue runningasa
function oftemperature, evenwiththeengine
switched off.
Carry outwork inthese areasonlywiththeen-
gine off,theignition switched off,and exercise
extreme caution.
~ Your Porsche isequipped withanelectronic ig-
nition system. Whentheignition ison, high
voltage ispresent inall wires connected with
the ignition system; therefore, exerciseex-
treme caution whenworking onany part ofthe
engine whiletheignition ison orthe engine is
running.
~ Always support yourcarwith safety stands ifit
is necessary towork under thecar.
~ When working underthecarwithout safety
stands butwith thewheels onthe ground,
make surethecarison level ground, the
wheels areblocked, andthat theengine
cannot bestarted.
Remove theignition key. ~
Donot smoke orallow anopen flame around
the battery orfuel.
Keep afire extinguisher inclose reach.
~ Incomplete orimproper servicingmaycause
problems inthe operation ofthe car. Ifin doubt
about anyservicing, haveitdone byyour
authorized Porschedealer.
Improper maintenance duringthewarranty
period mayaffect yourPorsche warranty cov-
erage.
~ Supplies offluids, e.g.engine oil,brake fluidor
coolant, arehazardous toyour health.
Keep these fluidsoutofchildren's reachand
dispose ofthem inaccordance withtheappro-
priate regulations.
~ Some countries requireadditional toolsand
special sparepartstobe carried.
Please makeenquiries beforedriving abroad.

Power measurements

Power measurements ondynamometers arenot
approved byPorsche.