Maintenance and Car Care 227
fAlways monitor your fuel consumption.fDrive smoothly, avoid abrupt changes in speed as much as possible.fAvoid jack rabbit starts and sudden stops.fDo not drive longer than necessary in the lower gears. Shifting into a higher gear early without lugging the engine will help save fuel.fProlonged “warm up” idling wastes gas. Start the vehicle just before you are ready to drive. Accelerate slowly and smoothly.fSwitch off the engine if stationary for longer periods.fAny additional weight carried in the vehicle reduces fuel economy. Always keep cargo to a minimum and remove all unnecessary items.fOrganize your trips to take in several errands in one trip.fAll electrical accessories contribute to increased fuel consumption.fOnly switch on the air conditioning when necessary.fDo not drive with the Roof Transport System mounted unless you need it.
The EPA estimated miles per gallon (mpg) is to be used for comparison purposes, actual mileage may be different from the estimated mpg, depending on your driving speed, weather conditions and trip length. Your actual highway mileage may be less than the estimated mpg.fPlease observe all local and national speed limits.
Operating Your Porsche in other
Countries
Government regulations in the United States and Canada require that automobiles meet specific emission regulations and safety standards. Therefore, cars built for the U.S. and Canada differ from vehicles sold in other countries.
If you plan to take your Porsche outside the continental 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 serious damage to both engine and catalytic converters could result,– Service may be inadequate due to lack of proper service facilities, tools or diagnostic equipment,– Replacement parts may not be available or very difficult to get.
Porsche cannot be responsible for the mechanical damage that could result because of inadequate fuel, service or parts availability.
If you purchased your Porsche abroad and want to bring it back home, be sure to find out about shipping and forwarding requirements, as well as current import and customs regulations.
Fuel
When the ignition is on, the fuel level is displayed on the instrument panel.fPlease see the chapter “FUEL GAUGE” on page 90.
fFire, open flame and smoking are prohibited when handling fuel.
Fuel and fuel vapors are hazardous to health.fAvoid contact with skin or clothing, since injury to your skin may occur.fDo not inhale fuel vapors, since they may make you ill and possibly cause death if inhalation is prolonged and occurs in a closed space.
To prevent damage to the emission control system and engine:fNever drive the tank dry.fAvoid high cornering speeds after the warning lights have come on.
fPlease see the chapter “FUEL ECONOMY” on page 226.
Check engine warning light
If the warning lights in the instrument panel come on and remain on while driving, it suggests: – a potential engine control problem and the need for system service or – an improperly fastened tank cap or
refueling with engine running.
Refueling Fire Risk
Fuel Vapors and Skin Contact
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NOTICE
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228 Maintenance and Car Care
Information
It is important that the service intervals, particularly the oil change intervals, are observed in accordance with the specifications in the “Maintenance” booklet.
Refueling
The RF energy from a cellphone can cause a sparking on bare metal, much like aluminum foil in a microwave oven. The spark could ignite gasoline fumes present while refueling.fDo not use a cellphone while pumping gas.
Static discharge from your body can ignite gasoline fumes present when you get back out of the vehicle and touch the fuel nozzle.fDo not re-enter the vehicle while pumping gas.
1. Stop the engine and switch off the ignition. 2. Open the filler flap by pressing on the rear part of the filler flap ( arrow). The vehicle must be unlocked.
3. Slowly open and remove the tank cap. Put the tank cap into the holder ( arrow). 4. Insert the pump nozzle fully into the filler neck. The handle of the pump nozzle must point downwards.
Total capacity – approx. 18.0 US gallons (68 liters), including approx. 3.17 US gallons (12 liters) reserve
Refueling Fires / Cellphones
Refueling Fires / Static Electricity
DANGERh
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230 Maintenance and Car Care
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/ 85MON (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.fAvoid 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 injector bores 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.fObserve 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.
Risk of destruction of the engine, fuel system or exhaust system if non-approved additives are used.fUse 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:
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 drivability and performance. – Substantially reduced fuel economy. – Vapor lock and non-start problems, especially at high altitude or at high temperature. – Engine malfunction or stalling.
NOTICE
RON+MON2 R+M2 or
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