2006 PORSCHE CAYMAN 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 Octane™ 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, that you 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
185
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 prop-
er 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 availabil-
ity.
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.

188
Maintenance, Car Care
Fuel Recommendations Your Porsche is equipped with catalytic convert-
ers 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
Octane™ knock control“ will adapt the ignition tim-
ing, 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 convert-
ers. 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 rec-
ommend you do not take your car to areas or
countries where unleaded fuel may not be availa-
ble.
Octane ratings Octane rating indicates a fuel’s ability to resist det-
onation. 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 meth-
anol 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 prob-
lems 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
189
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 us-
ing fuels containing MMT.
Portable Fuel Containers
Danger!
Portable fuel containers, full or partially
empty, may leak causing an explosion, or re-
sult in fire in case of an accident.
fNever carry additional fuel in portable contain-ers in your vehicle.

Vehicle Identification, Technical Data
271
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 180.
CoolantManual transmission: approx. 5.89 U.S. gallons/22.3 liters
Tiptronic S: approx. 6.42 U.S. gallons/24.3 liters
Manual transmission and differentialapprox. 3 quarts/2.8 liters
Tiptronic Sapprox. 2.5 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
® or Pentosin CHF 202
®
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. 1.58 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 Octane™ knock control” will adapt the ignition timing, if necessary.

278Ignition lock............................. 74
, 76, 77, 165
Immobilizer .................................................. 17
Instrument
Illumination ........................................... 82
Lights ................................................ 122
Panel ................................................... 79
Interior lights .............................................. 257
Interior mirror ............................................... 28
JJump lead starting ...................................... 242KKeylock...................................................... 165
Keys ............................................................ 17
with remote control ............................... 18LLATCH System.............................................. 53
Leather care............................................... 201
License plate light....................................... 122
Lids .......................................... 146
, 148
, 150
Emergency unlocking.......................... 234
Light
Flasher................................ 85
, 122
, 124
Low beam ..................................122, 124
Switch................................................ 124
Light alloy wheels ....................................... 201
Inscription .......................................... 220
Load switch-off ........................................... 232
Loading information .................................... 221
Locking........................................................ 21Luggage compartment ................................ 257
Cover ................................................. 154
Lids ................................................... 147
Net .................................................... 151
MMaintenance ............................................... 172
Make-up mirror ............................................. 39
Maximum permitted engine speeds ....... 14
, 164
Mirrors ......................................................... 29
Anti-glare .............................................. 28
Multi-Functional steering wheel
Function keys........................................ 38
NNavigation .................................................. 155
Notes on
Car care ............................................. 195
Maintenance ....................................... 172
Number plate light ............................. 122
, 254
OOctane rating..................................... 188
, 189
Off delay .................................................... 123
Oil ............................................................. 271
Checking level .................................... 110
Consumption ........................................ 14
Level checks ...................................... 179
Level indicator .................................... 110
On-board computer .................................. 8, 92
Basic settings ..................................... 112
Language versions.............................. 112On-board literature ..........................................2
Outside temperatur indicator..........................89
PPaint
Care...................................................195
Data ...................................................265
ParkAssistant................................................68
Parking
Aids .....................................................68
Assistant ..............................................69
Brake ...................................................55
Light ..................................................122
Particle filter ...............................................194
Plastic parts ...............................................200
Platform lift.................................................223
Porsche Active Suspension Management (PASM) .
65
Porsche Ceramic Composite Brake (PCCB) ..... 8
,
228
Porsche Communication Management ..... 8
, 155
Porsche Stability Management (PSM) ..............62
Information light ....................................64
Power measurements ..................................172
Power steering fluid level .................... 193, 271
Power windows ...................................... 23, 26
Practical tips ..............................................206
RRadiator fans ..............................................177
Radio reception...........................................156
Rain sensor ................................................125
Range on remaining fuel ....................... 93
, 113