2006 PORSCHE BOXSTER octane

4Fuel Quality Your 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 Oktane™ knock control” will adapt the ignition timing, if necessary. Fuels containing alcohol and ether Some areas of the U.S. require oxygenated fuels during certain portions of the year.
Oxygenated fuels are fuels which contain alcohols (such as methanol or ethanol) or ether (such as MTBE).
Under normal conditions, the amount of these compounds in the fuel will not affect driveability.
You may use oxygenated fuels in your Porsche, provided the octane requirements for your vehicle are met.
We recommend, however, to change to a different fuel or station if any of the following problems occur with your vehicle:
– Deterioration of driveability and performance.
– Substantially reduced fuel economy.
– Vapor lock and non-start problems, especially at high altitude or at high temperature.
– Engine malfunction or stalling. Fuels containing MMT Some North American fuels contain an octane enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT).
If such fuels are used, your emission control system performance may be negatively affected.
The check engine warning lights on your instrument panel may turn on.
If this occurs, Porsche recommends you stop using fuels containing MMT.

Maintenance, Car Care
195
Operating Your Porsche in other
Countries Government regulations in the United States and
Canada require that automobiles meet specific
emission regulations and safety standards. There-
fore, cars built for the U.S. and Canada differ from
vehicles sold in other countries.
If you plan to take your Porsche outside the conti-
nental limits of the United States or Canada, there
is the possibility that
– unleaded fuel may not be available;
– unleaded fuel may have a considerably lower
octane rating. Excessive engine knock and se-
rious damage to both engine and catalytic con-
verters could result;
– service may be inadequate due to lack of pro-
per service facilities, tools or diagnostic equip-
ment;
– replacement parts may not be available or very
difficult to get.
Porsche cannot be responsible for the me-
chanical damage that could result because
of inadequate fuel, service or parts availabi-
lity.
If you purchased your Porsche abroad and want to
bring it back home, be sure to find out about ship-
ping and forwarding requirements, as well as cur-
rent import and customs regulations.

198
Maintenance, Car Care
Fuel Recommendations Your Porsche is equipped with catalytic conver-
ters and must use UNLEADED FUEL ONLY.
Your engine is designed to provide optimum per-
formance and fuel economy using unleaded premi-
um fuel with an octane rating of 98 RON
(93
CLC or AKI). Porsche therefore recom-
mends 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
Oktane™ knock control“ will adapt the ignition ti-
ming, if necessary.
T h e u s e o f U N L E A D E D F U E L O N LY i s c r i t i c a l l y
important to the life of the catalytic conver-
ters. Deposits from leaded fuels will ruin the
converters and make it ineffective as an
emission control device.
Cars with catalytic converters have a smaller fuel
tank opening, and gas station pumps have smaller
nozzles. This will prevent accidental pumping of
leaded fuel into cars with catalytic converters. Unleaded fuels may not be available outside the
continental U.S. and Canada. Therefore, we re-
commend you do not take your car to areas or
countries where unleaded fuel may not be availab-
le.
Octane ratings Octane rating indicates a fuel’s ability to resist de-
tonation. Therefore, buying the correct octane gas
is important to prevent engine ”damage“.
The RON octane rating is based on the research
method. The CLC (U.S. Cost of Living Council oc-
tane rating) or AKI (antiknock index) octane rating
usually displayed on U.S. fuel pumps is calculated
as research octane number plus motor octane
number, divided by 2, that is written as:
The CLC or AKI octane rating is usually lower than
the RON rating:
For example: 95 RON equals 90 CLC or AKI.
Fuels containing alcohol and ether Some areas of the U.S. require oxygenated fuels
during certain portions of the year. Oxygenated fu-
els are fuels which contain alcohols (such as me-
thanol or ethanol) or ether (such as MTBE).
Under normal conditions, the amount of these
compounds in the fuel will not affect driveability.
You may use oxygenated fuels in your Porsche,
provided the octane requirements for your vehicle
are met. We recommend, however, to change to a
different fuel or station if any of the following pro-
blems occur with your vehicle:
– Deterioration of driveability and performance.
– Substantially reduced fuel economy.
– Vapor lock and non-start problems, especially
at high altitude or at high temperature.
– Engine malfunction or stalling. RON MON+
2 ---------------------------------------------------- o rRM+
2 ------------------------

Maintenance, Car Care
199
Fuels containing MMT Some North American fuels contain an octane en-
hancing additive called methylcyclopentadienyl
manganese tricarbonyl (MMT).
If such fuels are used, your emission control sys-
tem performance may be negatively affected.
The check engine warning light on your instrument
panel may turn on.
If this occurs, Porsche recommends you stop
using fuels containing MMT.
Portable Fuel Containers
Danger!
Portable fuel containers, full or partially em-
pty, may leak causing an explosion, or result
in fire in case of an accident.
fNever carry additional fuel in portable contai-ners in your vehicle.

286
Vehicle Identification, Technical Data
Capacities Use 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. 1.98 U.S.gallons/7.5liters
Oil change quantity with oil filter approx. 2.05 U.S.gallons/7.75 liters
Please observe the chapter “ENGINE OIL RECOMMENDATION” on Page 190.
Coolant Boxster
Manual transmission: approx. 5.81 U.S. gallons/22 liters
Tiptronic S: approx. 6.34 U.S. gallons/24 liters
Boxster S
Manual transmission: approx. 5.89 U.S. gallons/22.3 liters
Tiptronic S: approx. 6.42 U.S. gallons/24.3 liters
Manual transmission and differential 5-speed: approx. 2.4 quarts/2.25 liters, 6-speed: approx. 3 quarts/2.8 liters
Tiptronic Sapprox. 2.51 U.S. gallons/9.5 liters
Differential with Tiptronic Sapprox. 0.21 U.S. gallons/0.8 liters
Power steeringapprox. 1.1 quarts/1 liter hydraulic fluid Pentosin CHF 11 S
®
Brake fluidapprox. 0.4 quarts/0.39 liters; use only Original Porsche brake fluid
Windshield washerapprox. 0.66 U.S. gallons/2.5 liters without headlight washer
approx. 1.59 U.S. gallons/6 liters with headlight washer
Fuel tankRefill volume approx. 16.9 U.S. gallons/64 liters, including approx. 2.6 U.S.gallons/10 liters reserve.
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 Oktane™ knock control” will adapt the ignition timing, if necessary.

294IIdentifikation number................................... 278
Ignition lock............................. 74
, 76, 77, 163
Immobilizer .................................................. 17
Instrument
Illumination ........................................... 82
Lights ................................................ 124
Panel ................................................... 79
Interior lights .............................................. 271
Interior mirror ............................................... 30
JJump lead starting ...................................... 256KKeylock...................................................... 163
Keys ............................................................ 17
with remote control ............................... 18LLATCH System.............................................. 55
Leather care............................................... 216
License plate light....................................... 124
Lids ...................................................148
, 151
Emergency unlocking.......................... 248
Light
Flasher................................ 85
, 124
, 125
Low beam ..................................124, 125
Switch................................................ 125
Light alloy wheels ....................................... 216
Inscription .......................................... 234
Load switch-off ........................................... 246Loading information .................................... 235
Locking ................................................. 20
, 23
Luggage
Net ........................................... 146, 205
Luggage compartment ............... 152
, 153
, 270
Lid warning light.................................. 150
Lids ................................................... 150
MMaintenance ............................................... 184
Make-up mirror ............................................. 41
Maximum permitted engine speeds ....... 14
, 162
Mirrors ......................................................... 31
Anti-glare .............................................. 30
Multi-Functional steering wheel
Function keys........................................ 40
NNavigation .................................................. 154
Notes on
Car care ............................................. 209
Maintenance ....................................... 184
Number plate light ............................. 124
, 269
OOctane rating..................................... 198
, 199
Off delay .................................................... 124
Oil ............................................................. 286
Checking level .................................... 111
Consumption ........................................ 14
Level checks ...................................... 189
Level indicator .................................... 111On-board computer .................................. 8
, 92
Basic settings .....................................113
Language versions ..............................113
On-board literature ..........................................2
Orientation light ..........................................141
Outside temperatur indicator..........................89
PPaint
Care...................................................209
Data ...................................................279
ParkAssistant................................................70
Parking
Aids .....................................................70
Assistant ..............................................71
Brake ...................................................57
Light ..................................................124
Particle filter ...............................................208
Plastic parts ...............................................215
Platform lift.................................................237
Porsche Active Suspension
Management (PASM)......................................67
Porsche Ceramic Composite Brake (PCCB) .......8
Porsche Communication Management ..... 8
, 154
Porsche Stability Management (PSM) ..............64
Information light ....................................66
Power measurements ..................................184
Power steering fluid level .................... 207, 286
Power windows .............................. 25
, 28, 170
Practical tips ..............................................220