Portable Fuel Container; Fuel Recommendations - Porsche cayman gt4 Owner's Manual

Portable Fuel Container

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Transporting filled fuel
DANGER
containers
If the portable fuel container is damaged in an
accident and fuel escapes, it could ignite or
explode.
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Do not carry a portable fuel container on
journeys.
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Observe the relevant laws which prohibit fuel
transport.
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Portable fuel container

WARNING
vapor hazard
Vapors from the fuel are hazardous to health.
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Do not carry a portable fuel container in the
occupant compartment.

Fuel Recommendations

Your Porsche is equipped with catalytic
converters and must use UNLEADED FUEL
WITHOUT METALLIC ADDITIVES ONLY.
Your engine is designed to provide optimum
performance and fuel economy using unleaded
premium fuel with an octane rating of 98 RON/
88 MON (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/
85 MON (90 CLC or AKI) , since the engine's
"Electronic Octane™ knock control" will adapt the
ignition timing, if necessary.
If fuels of less than 95 RON/ 85 MON (90 CLC
or AKI) are used however, this could reduce
performance and increase fuel consumption.
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Avoid driving at full throttle.
It is important to observe the regular service
intervals, and particularly the oil change intervals,
specified in the "Maintenance" booklet.
The use of UNLEADED FUEL WITHOUT
METALLIC ADDITIVES ONLY is critically
important to the life of the catalytic
converters. Deposits from leaded fuels or
metallic additives will ruin the converters and
make them ineffective as an emission
control device. Metallic additives can cause
serious engine damage.
Cars with catalytic converters have a smaller fuel
tank opening, and gas station pumps that
dispense unleaded fuel 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
recommend you do not take your car to areas or
countries where unleaded fuel may not be
available.
Information
In some countries the available fuel quality may
not meet the requirements of your Porsche vehicle
and can result in coking inside or around the
injectorbores or other serious damage to the
engine, fuel system or exhaust system.
In this case, the fuel may be mixed only with the
additive sold and recommended by Porsche after
consulting your authorized Porsche dealer.
Porsche part number 000 043 206 89.
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Observe the instructions and mixture ratios
stated on the container.
It is important that the service intervals,
particularly the oil change intervals, are observed
in accordance with the specifications in the
"Maintenance" booklet.
NOTICE
Risk of destruction of the engine, fuel system or
exhaust system if non-approved additives are
used.
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Use only additives approved by Porsche.
The use of other additives can result in
destruction of the engine, fuel system or
exhaust system of your vehicle.
Octane ratings
Octane rating indicates a fuel's ability to resist
detonation. 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
octane 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:
RON+MON R+M
or
2 2
The CLC or AKI octane rating is usually lower than
the RON rating:
For example: 95 RON equals 90 CLC or AKI.
Fuels containing ethanol
Do not use any fuels containing more than
15 percent ethanol by volume.
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.
Maintenance and Car Care
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