2006 SKODA OCTAVIA fuel additives

Note
The fuel tank has a capacity of about 55 litres or 60 litres1)
, containing a reserve of
approx. 7 litres . ÐUnleaded petrol
First read and observe the introductory information and safety warn-
ings on page 155.
Your vehicle can only be operated with
unleaded fuel that complies with the
standard EN 228 (in Germany: standard DIN 51626-1 or E10 for unleaded fuel with
an octane rating of 95 RON and 91 RON or DIN 51626-2 or E5 for unleaded fuel
with the octane rating 95 RON and 98 RON).
Prescribed fuel - unleaded fuel 95/91 RON
Use unleaded fuel with the octane rating 95 RON. Unleaded petrol 91 RON can al-
so be used but results in a slight loss in performance.
If, in an emergency, the vehicle has to be refuelled with petrol of a lower octane
number than the one prescribed, the journey must only be continued at medium
engine speeds and a low engine load. Driving at high engine revs or a high engine
load can severely damage the engine! Refuel using petrol of the prescribed oc-
tane number as soon as possible.
Prescribed fuel - unleaded petrol min. 95 RON
Use unleaded fuel with the octane rating 95 RON.
In case of necessity, you can refuel with petrol with the octane rating 91 RON if
petrol with the octane rating 95 RON is not available. The journey must only be
continued at medium engine speeds and a minimum engine load. Driving at high
engine revs or a high engine load can severely damage the engine! Refuel using
petrol of the prescribed octane number as soon as possible.
Even in the event of an emergency, petrol of a lower octane number than 91 RON
must not be used, otherwise the engine can be severely damaged!
Unleaded petrol with higher octane number
Unleaded petrol that has a higher octane number than that required by the en-
gine can be used without limitations.
ä
On vehicles with prescribed unleaded petrol
95/91 RON, the use of petrol with a
higher octane number than 95 RON does not result in a noticeable power in-
crease or a lower fuel consumption.
On vehicles using prescribed unleaded petrol of min. 95

RON, the use of petrol
with a higher octane number than 95 RON can increase the power and reduce
fuel consumption.
Prescribed fuel - unleaded petrol 98/(95) RON
Use unleaded fuel with the octane rating 98 RON. Unleaded petrol 95 RON can
also be used but results in a slight loss in performance.
In case of necessity, you can refuel with petrol with the octane rating 91 RON of
unleaded fuel with octane rating 98 RON or 95 RON is not available. The journey
must only be continued at medium engine speeds and a minimum engine load.
Driving at high engine revs or a high engine load can severely damage the engine!
Refuel using petrol of the prescribed octane number as soon as possible.
Even in the event of an emergency, petrol of a lower octane number than 91 RON
must not be used, otherwise the engine can be severely damaged!
Fuel additives
Only use unleaded petrol, which complies with the standard EN 228 (in Germany:
standard DIN 51626-1 or E10 for unleaded fuel with an octane rating of 95 RON
and 91 RON or DIN 51626-2 or E5 for unleaded fuel with an octane rating of
95 RON and 98 RON), as these meet all of the requirements for fault-free engine
operation. We therefore recommend that no fuel additives are used. CAUTION
■ All
ŠKODA vehicles with petrol engines must only be operated with unleaded
petrol. Just filling the tank with leaded petrol once will damage the exhaust sys-
tem!
■ Engine parts can be damaged if petrol with a lower octane number than the one
prescribed is used.
■ In no case may fuel additives with metal components be used, especially not
with manganese and iron content.
LRP (lead replacement petrol) fuels with met-
allic components may not be used. There is a risk of causing considerable damage
to parts of the engine or exhaust system! £1)
Valid for Octavia Combi 4x4 and Octavia Scout.
156 General Maintenance

■
Fuels with metallic content may not be used. There is a risk of causing consider-
able damage to parts of the engine or exhaust system!
■ The use of unsuitable fuel additives can cause considerable damage to parts of
the engine or the exhaust system. ÐEthanol E85
Fig. 130
MultiFuel - power socket
First read and observe the introductory information and safety warn-
ings on page 155.
Only valid for vehicles with the 1.6/75°kW MultiFuel engine.
Biofuel Ethanol E85 consists of 85 % bioethanol and 15 % unleaded petrol com-
plying with the standard (DIN) EN°228.
Biofuel Ethanol E85 in accordance with the standard (DIN) EN
228 can be mixed in
any desired ratio with unleaded petrol.
Drive the vehicle for at least 5 minutes without interruption, if biofuel Ethanol
E85 has been refuelled, so that the engine control unit can determine the share
of the biofuel in the fuel. During this period do not drive at top speed of your ve-
hicle or high engine speeds and not at full throttle. During this process decrease
the idling speed.
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. 130.
ä The outside temperature
Duration of engine preheating
Below -10 °C We recommend up to 1 hour
Below -15 ℃ at least 1 hours.
Below -25 °C at least 2 hours. If an engine preheating is not possible at outside temperatures below -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 Ethanol 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. CAUTION
■ Just filling the tank once with diesel fuel that does not comply with the stand-
ard, can cause severe damage to parts of the engine, the fuel and exhaust sys-
tem!
■ If you park the car for a lengthy period, fill with petrol complying with (DIN) EN
°228, because Ethanol E85 can contain low quantities of impurities, which can
lead to corrosion. For the sake of the environment
■ If you use Ethanol E85, the CO
2 emission of your vehicle is lowered up to 5 %.
■ The use of engine preheating at temperatures below -10 °C has a positive effect
on the fuel consumption and thus on the environment. 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 un-
leaded 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.
■ The interval of 15 000 km applies for the oil change.
■ An extension cable used for connecting to the electrical network is located in
the luggage compartment. Ð
157
Inspecting and replenishing

Diesel fuel
First read and observe the introductory information and safety warn-
ings on page 155.
Your vehicle can only be operated with
diesel fuel, which complies with the
standard EN
590 (standard DIN 51628 in Germany, standard ÖNORM C 1590 in
Austria, GOST R 52368-2005/EN 590:2004 in Russia).
Operation in winter - Winter-grade diesel fuel
In the winter, only use diesel fuel, which complies with the standard EN 590
(standard DIN 51628 in Germany, standard ÖNORM C 1590 in Austria,
GOST R 52368-2005/EN 590:2004 in Russia). “Winter-grade diesel fuel” will still
operate properly even at a temperature of -20 °C.
It is often the case in countries with different climatic conditions that diesel fuels
available have a different temperature characteristic. The ŠKODA Service Partners
and filling stations in the relevant country will be able to provide you with infor-
mation regarding the diesel fuels available.
Preheating fuel
The vehicle is fitted with a fuel filter preheating system. This secures operation of
a vehicle using diesel fuel down to an environmental temperature of -25 °C.
Fuel additives
Fuel additives, so-called “flow improvers” (petrol and similar products) must not
be added to the diesel fuel. CAUTION
■ Just filling the tank once with diesel fuel that does not comply with the stand-
ard, can cause severe damage to parts of the engine, the fuel and exhaust sys-
tem!
■ If a different fuel other than diesel fuel, which complies to the above mentioned
standards (e.g. petrol) is used by mistake do not start the engine or switch on the
ignition! Extensive damage to engine parts can occur! We recommend that the
fuel system is cleaned by a

ŠKODA Service Partner.
■ Water which has collected in the fuel filter can cause engine faults.
■ Your vehicle is not adapted for use of biofuel (RME), therefore this fuel must not
be refuelled and driven. The use of biofuel (RME) can cause considerable damage
to parts of the engine or fuel system. Ð
ä Engine compartment
ä
Introduction
This chapter contains information on the following subjects:
Opening and closing the bonnet 160
Engine compartment overview 160
Checking the engine oil level 161
Replenishing the engine oil 161
Changing engine oil 162
Coolant 162
Checking the coolant level 163
Replenishing the coolant 163
Radiator fan 164
Checking the brake fluid 164
Changing the brake fluid 164
Windscreen washer system 165
There is a risk of injuries, scalding, accidents and fire when working in the en-
gine compartment, e.g. inspecting and replenishing oil and other fluids. For this
reason, it is essential to comply with the warning instructions stated below and
with the general applicable rules of safety. The vehicle's engine compartment is
a hazardous area . WARNING
■ Never open the bonnet if you can see steam or coolant flowing out of the
engine compartment - risk of scalding! Wait until the steam or coolant has
stopped escaping.
■ Turn off the engine and withdraw the ignition key.
■ If the vehicle is fitted with a manual gearbox, move the gearshift lever into
Neutral, or if the vehicle is fitted with an automatic gearbox, move the selec-
tor lever into position P .
■ Firmly apply the handbrake.
■ Allow the engine to cool.
■ For safety reasons, the bonnet must always be properly closed when driving.
This is why after closing the bonnet, the lock must always be checked to en-
sure it has engaged properly. £
158 General Maintenance