engine coolant PORSCHE 911 GT3 2010 5.G Owners Manual
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10
Table of Contents Exercise Extreme Caution when Working
on your Vehicle ........................................... 157
Coolant Level ............................................. 158
Engine Oil................................................... 159
Engine Oil Level .......................................... 160
Brake Fluid Level ........................................ 162
Fuel Economy ............................................. 164
Operating your Porsche in other Countries .... 164
Fuel ........................................................... 165
Fuel Recommendations............................... 166
Portable Fuel Containers ............................. 167
Fuel Evaporation Control ............................. 167
Emission Control System............................. 168
How Emission Control Works ....................... 169
Washer Fluid............................................... 170
Power Steering ........................................... 171
Air Filter ..................................................... 172
Combination Filter ....................................... 172
Manual Transmission Oil .............................. 172
Wiper Blades .............................................. 173
Car Care Instructions.................................. 174
Exercise Extreme Caution when Working
on your Vehicle ........................................... 183
Tires/Wheels .............................................. 184
Loading Information .................................... 195
Wheels with Central Locking ........................ 197
Central Bolts .............................................. 197
Changing a Wheel ....................................... 198
Checking Tire Pressure with a
Pressure Gauge .......................................... 203
Flat Tire ..................................................... 203
Lifting the Vehicle with a Lifting Platform or
Garage Lift ................................................. 206
Electrical System ........................................ 207
Battery....................................................... 211Replacing the remote-control battery ............216
Emergency Starting with Jumper Cables .......217
Bulb chart ..................................................219
Lights, Replacing Bulbs ...............................219
Headlights ..................................................220
License Plate Light ......................................227
Front Side Lights, Front Turn Signal Lights,
Daytime Running Lights, Tail Lights and
Additional Brake Light..................................227
Adjusting Headlights ....................................228
Towing .......................................................230
Vehicle Identification....................................234
Technical Data ............................................236
Engine Diagram at full Power .......................242
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Page 113 of 251

112
Instruments, On-Board Computer
Temperature gauge (ignition on) USA: Display in °F
Canada: Display in °C
Pointer to the left – engine cold
fAvoid high engine speeds and heavy engine
loading. Pointer in the middle – normal operating tempe-
rature
The pointer may move up to the red area when
engine is heavily loaded and outside temperature
is high, but should return to “normal” when engine
load is reduced.
Warning light “A” If the coolant temperature is too high, the
warning light comes on.
Additionally, a warning is displayed in the on-board
computer.
fPull off the road, turn off the engine and allow
to cool.
fCheck radiator and air passages in front end of
car for obstructions.
fCheck coolant level.
If necessary, add coolant and have fault
remedied at an authorized Porsche dealer.
Please see the chapter “COOLANT LEVEL” on
Page 158.
Note
To prevent excessive temperatures, the cooling-
air passages must not be restricted by coverings
(e.g. films, “stone guards”). If the coolant level is too low, the warning light
flashes.
Additionally, a warning is displayed in the on-board
computer.
fSwitch engine off and allow to cool.
fAdd coolant after the engine has cooled to the
touch.
fHave the cause of the fault remedied at an
authorized Porsche dealer.
Please see the chapter “COOLANT LEVEL” on
Page 158.
Caution!
Risk of engine damage.
fIf the warning lights come on even though
coolant level is correct, do not continue
driving.
fHave the fault remedied at the nearest authorized Porsche dealer.
Engine compartment blower fan In addition, this warning light flashes to indicate a
fault in the engine compartment blower fan.
fHave the cause of the fault remedied at an
authorized Porsche dealer.
Cooling System
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Page 116 of 251

Instruments, On-Board Computer
115
With the engine warmed up and running at a speed
of 3000 rpm, the engine oil pressure should be
approx. 3.5 bar or higher.If oil pressure drops abruptly and a message
is displayed on the on-board computer when
the engine is running on or when driving:
fStop immediately in a suitable place.
fSwitch off the engine.
fCheck whether there is an obvious oil leak on
or under the car.
fIf no oil leak can be detected:
Measure the oil level using the on-board
computer with the engine idling.
Please see the chapter “OIL DISPLAY AND
MEASUREMENT OF THE ENGINE OIL LEVEL”
on Page 143.
fAdd engine oil if necessary.
Please see the chapter “ENGINE OIL LEVEL”
on Page 160.
Caution!
Risk of engine damage.
fDo not continue driving if there is an obvious oil
leak.
fDo not continue driving if the warning lights
come on even though oil level is correct.
fHave the fault remedied at the nearest authorized Porsche dealer.If the battery voltage drops abruptly, a warning
message will be displayed by the on-board
computer.
If the warning is displayed by the on-board
computer while the engine is running or while
driving:
fStop the car in a safe place and stop the
engine.
Possible causes
– Defect in the battery charging system.
– Broken drive belt.
Warning!
Risk of engine damage with resultant loss of
control and accident, leading to serious
personal injury or death.
A broken drive belt means there is no power
assistance to the steering (more effort is
required to steer) and coolant pump function
will stop.
fDo not continue driving.
fHave the fault remedied at the nearest autho-rized Porsche dealer.
Engine Oil Pressure
Battery
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Page 151 of 251

150
Warnings
Fuel gauge warning
lightConsider remaining range Refuel at next opportunity.
Check engine oil level Start engine oil level measurement in the on-board computer.
Engine oil pressure too low Stop immediately at a suitable place, measure oil level with the on-board computer and, if necessary,
add engine oil.
Warning light
Temperature gaugeEngine temperature too high Switch engine off and let it cool.
Check coolant level and, if necessary, add coolant.
Temperature gauge
warning light flashesCheck coolant level Switch engine off and let it cool.
Check coolant level and, if necessary, add coolant.
Check engine
visit workshopStop immediately at a suitable place and check tank cap for proper fastening. If the tank cap was
fastened correctly, consult your authorized Porsche dealer.
Reduced engine power Consult your authorized Porsche dealer.
Temperature gauge
warning light flashesFailure of
engine compartment blowerConsult your authorized Porsche dealer.
Warning Battery/generator Stop at a safe place and switch the engine off. Do not continue driving.
Have the fault remedied at an authorized Porsche dealer.
Failure
oil pressure
indicatorHave the fault remedied at an authorized Porsche dealer.
Failure
oil level
indicatorHave the fault remedied at an authorized Porsche dealer.
Oil temperature
indicator faultyHave the fault remedied at an authorized Porsche dealer.Instrument
panelOn-board
computerText display on on-board
computerMeaning/measure
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Page 157 of 251

156
Maintenance, Car Care
Maintenance, Car CareExercise Extreme Caution when Working
on your Vehicle ........................................... 157
Coolant Level ............................................. 158
Engine Oil................................................... 159
Engine Oil Level .......................................... 160
Brake Fluid Level ........................................ 162
Fuel Economy ............................................. 164
Operating your Porsche in other Countries .... 164
Fuel ........................................................... 165
Fuel Recommendations............................... 166
Portable Fuel Containers ............................. 167
Fuel Evaporation Control ............................. 167
Emission Control System............................. 168
How Emission Control Works ....................... 169
Washer Fluid............................................... 170
Power Steering ........................................... 171
Air Filter ..................................................... 172
Combination Filter ....................................... 172
Manual Transmission Oil .............................. 172
Wiper Blades .............................................. 173
Car Care Instructions.................................. 174
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Page 158 of 251

Maintenance, Car Care
157
Exercise Extreme Caution when
Working on your Vehicle
Danger!
Ignoring the following instructions may
cause serious personal injury or death.
fThe engine compartment of any motor vehicle
is a potentially hazardous area. If you are not
fully familiar with proper repair procedures, do
not attempt the adjustments described on the
following pages.
This caution also applies to the entire vehicle.
fO n l y w o r k o n y o u r v e h i c l e o u t d o o r s o r i n a w e l l
ventilated area.
fEnsure that there are no open flames in the
area of your vehicle at any time when fuel
fumes might be present. Be especially
cautious of such devices such as hot water
heaters which ignite a flame intermittently.
fBefore working on any part in the engine
compartment, turn the engine off and let it cool
down sufficiently. Hot engine compartment
components can burn skin on contact.
fBe alert and cautious around engine at all
times while the engine is running.
If work has to be performed with the engine
running, always set the parking brake, and
make sure the shift lever is in neutral position.fIn particular, be very careful to ensure that
items of clothing (ties, shirt, sleeves etc.),
jewelry, long hair, hand or fingers cannot get
caught in the engine-compartment blower, fan,
belts or other moving parts.
The radiator and radiator fans are in the front
of the car.
The engine-compartment blower is mounted
on the engine-compartment lid.
The engine-compartment blower can start or
continue running as a function of temperature,
even with the engine switched off.
Carry out work in these areas only with the
engine off, the ignition switched off, and
exercise extreme caution.
fYour Porsche is equipped with an electronic
ignition system. When the ignition is on, high
voltage is present in all wires connected with
the ignition system; therefore, exercise
extreme caution when working on any part of
the engine while the ignition is on or the engine
is running.
fAlways support your car with safety stands if it
is necessary to work under the car.
fWhen working under the car without safety
stands but with the wheels on the ground,
make sure the car is on level ground, the
wheels are blocked, and that the engine
cannot be started.
Remove the ignition key. fDo not smoke or allow an open flame around
the battery or fuel.
Keep a fire extinguisher close at hand.
fIncomplete or improper servicing may cause
problems in the operation o f t h e c a r. I f i n d o u b t
about any servicing, have it done by your
authorized Porsche dealer.
Improper maintenance during the warranty
period may affect your Porsche warranty
coverage.
fSupplies of fluids, e.g. engine oil, brake fluid or
coolant, are hazardous to your health.
Keep these fluids out of children’s reach and
dispose of them in accordance with the appro-
priate regulations.
fSome countries require additional tools and
special spare parts to be carried in your
vehicle.
Please make enquiries before driving abroad.
Power measurementsPower measurements on dynamometers are not
approved by Porsche.
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Page 159 of 251

158
Maintenance, Car Care
Coolant LevelfPlease see the chapter “EXERCISE EXTREME
CAUTION WHEN WORKING ON YOUR VEHICLE”
on Page 157.
The cooling system is filled at the factory with a
permanent coolant.
It provides year-round protection from corrosion
and freezing down to –31 °F/–35 °C
.
fOnly use antifreeze authorized by Porsche.
Checking coolant level The expansion tank with its filler orifice is in the
left-hand side of the engine compartment.
fCheck the coolant level regularly through the
transparent expansion tank.
When the engine is cold and the car is level the
fluid level must lie between the “MIN” and “MAX”
markings. Topping off coolant
Warning!
Danger of serious personal injury or death
from scalding. Coolant is hazardous to your
health, and may be fatal if swallowed.
fDo not open the cap of the expansion tank
while the engine is hot.
fAllow the engine to cool down before opening
the cap and protect your hands, arms and face
from any possible escape of hot coolant.
fKeep coolant out of children’s reach.
fAlso, keep coolant away from your pets.
They can be attracted to it should there be a
spill, or to used coolant left in an open
container. Coolant can be deadly to pets if consumed.1. Switch engine off and let it cool.
Please see the chapter “COOLING SYSTEM” on
Page 112.
2. Cover the expansion tank cap with a thick rag.
Open cap slowly and carefully and allow
overpressure to escape.
Then unscrew cap completely.
3. Only add a mixture of antifreeze and water in
equal parts, and do not exceed the “MAX”
mark.
Antifreeze in coolant:
50% gives protection down to –31 °F/–35 °C
60% gives protection down to –58 °F/–50 °C
4. Screw cap firmly on.
If in an emergency pure water has been added, the
mix ratio must be corrected at an authorized
Porsche dealer.
Marked loss of coolant indicates leakage in the
cooling system.
The cause should immediately be remedied at an
authorized Porsche dealer.
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Page 171 of 251

170
Maintenance, Car Care
Washer FluidCapacityfPlease see the chapter “CAPACITIES” on
Page 239.Washer fluidThe reservoir is denoted by the blue screw cap
and is located in the luggage compartment in the
rear left.Clean water is generally not enough to clean the
windshield and headlights. Depending on the
season, mix the water with the appropriate
additives. Follow the instructions for the mixture
ratio.
Only use window cleaner concentrate which meets
the following requirements.
– Dilutability 1:100
– Phosphate-free
– Suitable for plastic headlight lenses.
We recommend window cleaner concentrates
approved by Porsche. Your authorized Porsche
dealer will be pleased to advise you.
Summer filling
Water + window cleaner concentrate at the mixing
ratio indicated on the container.
Winter filling
Water + antifreeze protection + window cleaner
concentrate at the mixing ratio indicated on the
container.
fPlease note all the information on the contai-
ners of the window cleaner concentrate or the
antifreeze protection.Topping off washer fluid
1. Please note all the information on the refill
container of the cleaning agent.
2. Open cap of the washer-fluid reservoir (arrow).
3. Top off washer fluid and close cap properly.
fDo not use engine coolant anti-freeze or any
other solution that can damage the car’s paint,
in the washer reservoir.
If less than 0.53 quarts (0.5 liter) remains, a
warning message appears on the on-board
computer.
fAdd washer fluid.
Warning light
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Page 184 of 251

Practical Tips, Emergency Service
183
Exercise Extreme Caution when
Working on your Vehicle
Danger!
Ignoring the following instructions may
cause serious personal injury or death.
fThe engine compartment of any motor vehicle
is a potentially hazardous area. If you are not
fully familiar with proper repair procedures, do
not attempt the adjustments described on the
following pages.
This caution also applies to the entire vehicle.
fO n l y w o r k o n y o u r v e h i c l e o u t d o o r s o r i n a w e l l
ventilated area.
fEnsure that there are no open flames in the
area of your vehicle at any time when fuel
fumes might be present. Be especially
cautious of such devices such as hot water
heaters which ignite a flame intermittently.
fBefore working on any part in the engine
compartment, turn the engine off and let it cool
down sufficiently. Hot engine compartment
components can burn skin on contact.
fBe alert and cautious around engine at all
times while the engine is running.
If work has to be performed with the engine
running, always set the parking brake, and
make sure the shift lever is in neutral position.fIn particular, be very careful to ensure that
items of clothing (ties, shirt, sleeves etc.),
jewelry, long hair, hand or fingers cannot get
caught in the engine-compartment blower, fan,
belts or other moving parts.
The radiator and radiator fan are in the front of
the car.
The engine-compartment blower is mounted
on the engine-compartment lid.
The engine-compartment blower can start or
continue running as a function of temperature,
even with the engine switched off.
Carry out work in these areas only with the
engine off, the ignition switched off, and
exercise extreme caution.
fYour Porsche is equipped with an electronic
ignition system. When the ignition is on, high
voltage is present in all wires connected with
the ignition system; therefore, exercise
extreme caution when working on any part of
the engine while the ignition is on or the engine
is running.
fAlways support your car with safety stands if it
is necessary to work under the car.
Jacks are not suitable for this kind of work.
fWhen working under the car without safety
stands but with the wheels on the ground,
make sure the car is on level ground, the
wheels are blocked, and that the engine
cannot be started.
Remove the ignition key.fDo not smoke or allow an open flame around
the battery or fuel.
Keep a fire extinguisher in close reach.
fIncomplete or improper servicing may cause
problems in the operation o f t h e c a r. I f i n d o u b t
about any servicing, have it done by your
authorized Porsche dealer.
Improper maintenance during the warranty
period may affect your Porsche warranty
coverage.
fSupplies of fluids, e.g. engine oil, brake fluid or
coolant, are hazardous to your health.
Keep these fluids out of children’s reach and
dispose of them in accordance with the appro-
priate regulations.
fSome countries require additional tools and
special spare parts to be carried.
Please make enquiries before driving abroad.
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Page 240 of 251

Technical Data
239
CapacitiesUse only fluids and fuels authorized by Porsche. Your authorized Porsche dealer will gladly advise you.
Your Porsche has been designed so that it is not necessary to mix any additives with oils or fuels.
EngineOil change quantity without oil filter approx. 9.25 quarts / 8.75 liters
Oil change quantity with oil filter approx. 9.5 quarts / 9 liters
Please see the chapter “ENGINE OIL” on Page 159.
Coolantapprox. 7.9 U.S. gallons / 30 liters
Manual transmission
and differential
approx. 3.5 quarts / 3.3 liters transmission oil SAE 75W-90, Mobilube PTX
Fuel tank approx. 17.7 U.S. gallons / 67 liters
Fuel qualityYour engine is designed to provide optimum performance and fuel economy using
unleaded premium fuel with an octane rating of 98 RON (93 CLC or AKI).
Porsche therefore recommends the use of these fuels in your vehicle.
Porsche also recognizes that these fuels may not always be available. Be assured that your vehicle
will operate properly on unleaded premium fuels with octane numbers of at least 95 RON (90 CLC or AKI),
since the engine’s “Electronic Octane™ knock control” will adapt the ignition timing, if necessary.
Power steeringapprox. 1.35 quarts / 1.27 liter hydraulic fluid Pentosin CHF 11 S
® or Pentosin CHF 202
®
Brake fluid0.67 quarts / 0.63 liters; use only Original Porsche brake fluid.
Windshield washerapprox. 2.6 quarts / 2,5 liters without headlight washer
approx. 6.3 quarts / 6 liters with headlight washer
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