fuel additives SKODA OCTAVIA 2008 2.G / (1Z) Owner's Manual

Fuel219
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
Fuel
Petrol
Grades of petrol
There are various grades of petrol. Please read ⇒ page 269, “Technical Data” in
order to know which grade of petrol your vehicle requires. You will also find the
same information affixed to the inside of the fuel filler flap of your vehicle
⇒ page 222, fig. 207 .
A distinction is made between unleaded an d leaded petrol. All Škoda vehicles with
petrol engines are equipped with a catalyti c converter and must therefore be only
driven with unleaded petrol . Unleaded petrol complies with the standard
DINEN228 .
The individual grades of petr ol are distinguished by their octane number (RON).
Please adopt the following procedure if the grade of petrol which you normally use
is not be available in exceptional circumstances.
Engines which need unleaded premium petrol 95 RON can also be run on
unleaded regular petrol 91 RON. This does, however, result in a slight loss in
performance.
If, in an emergency, the only fuel availa ble is one which has a lower octane number
than that required by the engine then only drive at medium engine speeds and
lower engine loadings.
You can make unlimited use of fuel which has a higher octane number than that
required by the engine. There will, howeve r, be no advantages gained by this in
terms of engine performa nce and fuel consumption!
The handling, performance and life of your engine are determined to a significant
extent by the quality of the fuel. Do not use any petrol additives. Use a fuel
complying with the standard.
You can find further information on refuelling ⇒page 222, “Refuelling”.
Caution
•Filling the tank even only once with leaded petrol will result in the catalytic
converter being destroyed.
•Operating the engine with petrol of a low octane number can result in engine
damage at high revolutions or severe engine loading.
Biofuel Ethanol E85*
Ethanol E85*
Only valid for vehicles with 1.6/75 kW MultiFuel engine.
Biofuel Ethanol E85 consists of 85% bi oethanol and 15% unleaded petrol
complying with the standard (DIN) EN 228.
Biofuel Ethanol E85 in accordance with th e standard (DIN) EN 228 can be mixed in
any desired ratio with unleaded petrol, see Owner's Manual.
Drive the vehicle for at least 5 minutes without interruption, if biofuel Ethanol E85
has been refuelled, so that the engine co ntrol unit can determine the share of the
biofuel in the fuel. During this period do not drive at top speed of your vehicle or
high engine speeds and not at full throttle . During this process decrease the idling
speed.
WARNING
Pay attention to any legal requirements if you do carry a spare canister in the
vehicle. We do not recommend carrying any fuel canisters in your vehicle for
safety reasons. The canister can be da maged in the event of an accident and
fuel may leak out.
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Fuel
220
Caution
•Even inadvertently filling the fuel tank with another biofuel such as Ethanol°E85
can result in damage to the fuel system.
•If you park the car for a lengthy period, fill with petrol complying with (DIN)
EN°228, because Ethanol E85 can contain lo w quantities of impurities, which can
lead to corrosion.
For the sake of the environment
If you use Ethanol E85, the CO2 emission of your vehicl e is lowered up to 5%.
Note
•When operating with Ethanol E85, the fuel consumption increases by approx
33%, as a lower quantity of energy is contained in the bioethanol than in unleaded
petrol.
•Biofuel Ethanol E85 contains only a low quantity of additives in contrast to
unleaded petrol. Therefore we recommend to fill up the tank with unleaded petrol
complying with EN 228 every 15 000 km (e.g. before the oil change) and run it
empty, so that the engine remains clean. Make sure not to use the whole content of
the tank ⇒page 222, “Refuelling”.
•The interval of 15 000 km applies for the oil change.
Operation in winter
If you use biofuel Ethanol E85 at very low temperatures, it is necessary to preheat
the engine before an engine start.
The power socket for the engine preheating is located in the front bumper next to
the fog light ⇒fig. 205 .
If an engine preheating is not possible at outside temperatures lower than -10 °C,
the share of unleaded petrol complying with EN 228 must be as high as possible.
Thus the cold start property of the engine is clearly improved.
If there is biofuel Etha nol E85 in the tank and the engine is not preheated, it can lead
at temperatures below -15°C to very poor or no starting of the engine.
For the sake of the environment
The use of engine preheating at temperatures below -10°C has a positive effect on
the fuel consumption and thus on the environment.
The outside temperatureDuration of engine preheating
lower than -10 °Cwe recommend up to 1 hour
lower than -15 °Cat least 1 hour
lower than -25 °Cat least 2 hour
Fig. 205 MultiFuel - power
socket
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Fuel221
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
Note
An extension cable used for connecting to the electrical network is located in the
luggage compartment.
Diesel
Diesel fuel
Your vehicle can be operated with diesel fuel, which complies with the standard
DIN EN 590 .
Fuel additives
You must not use fuel additives, so-called “flow improvers” (petrol and similar
products) in diesel fuel.
If the quality of the diesel fuel is p oor, it is then necessary to drain the fuel filter
more often than stated in the Service schedule.
You can find information on refuelling ⇒page 222, “Refuelling”.
Caution
•Only use fuel which complies with the standard DINEN590. Filling the tank
even only once, which does not comply with the standard, can result in damage to
the fuel system.
•Water which has collected in the fuel fi lter can result in engine problems.
•Your vehicle is not adapted for use of biodiesel, therefore this fuel must not be
refuelled and driven. Using this biodiesel ca n lead to damage to the engine or the
fuel system.
Operation in winter
Winter-grade diesel fuel
A different grade of diesel fuel is available at filling stations in winter than during the
summer. Using “summer-grade diesel fuel” at temperatures below 0°C can result in
operational problems because the diesel be comes viscous as a result of paraffin
separation.
It is therefore the case that DIN EN 590 prescribes diesel fuel class for certain
periods of the year which can also be pu rchased at the corresponding time during
the year. “Winter-grade diesel fuel” will still operate properly even at a temperature
of -20°C.
It is often the case in countries with diff erent climatic conditions that diesel fuels
available have a different temperature characteristic. Škoda Service Partners and
filling stations in the country concerned wi ll be able to provide you with informa-
tion regarding the diesel fuels available.
Prewarming fuel
The vehicle is fitted with a fuel filter prewarming system. This secures operation of
a vehicle using diesel fuel down to an environmental temperature of -25°C.
Caution
It is not permitted to add the various fuel additives on the market, including petrol,
to diesel fuel in order to improve its flow properties.
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