2006 SKODA OCTAVIA oil

■
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

Opening and closing the bonnet
Fig. 131
Bonnet/radiator grille release lever: Release lever Fig. 132
Securing the bonnet with the
bonnet support
First read and observe the introductory information and safety warn-
ings on page 158.
Opening
›
Pull the release lever under the dash panel 1
» Fig. 131.
Before opening the bonnet, ensure that the arms of the windscreen wipers are
correctly in place against the windscreen otherwise the paintwork could be dam-
aged.
› Pull the release lever in the direction of the arrow 2
» Fig. 131 and the bonnet
is unlocked.
› Grab hold of the bonnet and lift.
› Take the bonnet support out of its holder and secure the opened bonnet by in-
serting the end of the support in the opening 3
» Fig. 132
designed for it.
ä Closing
› Lift the bonnet slightly and unhook the bonnet support. Press the bonnet sup-
port into the holder designed to hold it.
› Let the bonnet drop into the lock carrier lock from a height of around 20 cm –
do not push it in .
Check that the bonnet is closed properly. Ð Engine compartment overview
Fig. 133
1.8 ltr./118 kW TSI Petrol engine
First read and observe the introductory information and safety warn-
ings on page 158.
Coolant expansion reservoir 163
Windscreen washer fluid reservoir 165
Engine oil filler opening 161
Engine oil dipstick 161
Brake fluid reservoir 164
Battery (below a cover) 165
Note
The location of the inspection points in the engine compartment of petrol and
diesel engines is practically identical. Ð
ä 1
2
3
4
5
6
160
General Maintenance

Checking the engine oil level
Fig. 134
Dipstick
First read and observe the introductory information and safety warn-
ings on page 158.
The dipstick indicates the level of oil in the engine
» Fig. 134.
Checking the oil level
› Ensure that the vehicle is positioned on a level surface and the engine has
reached its operating temperature.
› Switch off the engine.
› Open the bonnet.
› Wait a few minutes until the engine oil flows back into the oil sump and remove
the dipstick.
› Wipe the dipstick with a clean cloth and insert it again to the stop.
› Then pull the dipstick out again and check the oil level.
Oil level within range A
›
No oil must be refilled.
Oil level within range B
›
Oil can
be refilled. It is possible that the oil level may then be within range A
after doing this.
Oil level within range C
›
Oil must be refilled. It is sufficient, once this is done, to keep the oil level within
range B
.
It is normal for the engine to consume oil. The oil consumption may be as much as
0.5 l/1 000 km depending on your style of driving and the conditions under which
you operate your vehicle. Consumption may be slightly higher than this during the
first 5 000 kilometres. ä
One should therefore check the oil level at regular intervals, preferably every time
after the fuel tank is filled or after driving for long stretches.
We recommend maintaining the oil level within the range A
, but not above
, if
the engine has been operating at high loads, for example, during a lengthy motor-
way trip during the summer months, towing a trailer or negotiating a high moun-
tain pass.
The warning light in the instrument cluster will indicate whether the oil level is
too low » page 21, Engine oil  . In this case, check the oil level with the dip-
stick, as soon as possible. Add oil accordingly. CAUTION
■ The oil level must on no account extend beyond the range A
» Fig. 134. Risk of
damaging the exhaust system!
■  Do not continue your journey if for some reason it is not possible to top up
the engine oil under the prevailing conditions! Switch off the engine and obtain
professional assistance from a

ŠKODA specialist garage, otherwise it could cause
severe engine damage. Note
Engine oil specifications » page 200, Specifications and engine oil capacity .Ð Replenishing the engine oil
First read and observe the introductory information and safety warn-
ings on page 158.
›
Check the engine oil level
» page 161.
› Unscrew the cap of the engine oil filler opening.
› Replenish the oil in portions of 0.5 litres in accordance with the correct specifi-
cations » page 200, Specifications and engine oil capacity .
› Check the oil level
» page 161.
› Carefully screw on the oil filler opening cap and push the dipstick in fully. Ð
ä
161
Inspecting and replenishing

Changing engine oil
First read and observe the introductory information and safety warn-
ings on page 158.
The engine oil must be changed at the intervals stated in the Service schedule or
according to the service interval indicator
» page 10, Service Interval Display.CAUTION
Additives must not be added to the engine oil - risk of causing considerable dam-
age to parts of the engine! Damage, which results from such product, are exclu-
ded from the warranty. Note
If your skin has come into contact with oil, it must be washed thoroughly. ÐCoolant
First read and observe the introductory information and safety warn-
ings on page 158.
The cooling system is filled with a coolant in the factory.
The coolant consists of water with a concentration of coolant additive of 40 %.
This mixture provides antifreeze protection down to -25
°C and also protects the
cooling and heating system from corrosion. It also prevents the formation of scale
and significantly increases the boiling point of the coolant.
The concentration of coolant must therefore not be reduced by adding water dur-
ing the summer months or in countries with a warm climate. The concentration of
coolant additive in the coolant must be at least 40 %. 40 %.
If a higher concentration of antifreeze is required for climatic reasons, the amount
of coolant additive can only be increased up to 60 % (antifreeze protection down
to approx. -40 °C). The antifreeze protection tails off above that concentration.
Vehicles exported to countries with a cold climate are already factory-filled with a
coolant which offers antifreeze protection down to about -35 °C. In these coun-
tries the concentration of coolant additive should be at least 50 %.
When refilling, we only recommend you use the same antifreeze written on the
antifreeze expansion tank » Fig. 135 on page 163.
ä
ä
Coolant capacity
Petrol engines Capacities (in litres)
1.2 ltr./77 kW TSI 7.7
1.4 l/59 kW 7.1
1.4 ltr./90 kW TSI 7.7
1.6 l/75 kW 7.4
1.8 ltr./112 kW TSI 8.6
1.8 ltr./118 kW TSI 8.6
2.0 ltr./147 kW TSI 8.6 Diesel engines
Capacities (in litres)
1.6 ltr./77 kW TDI CR 8.4
1.9 l/77 kW TDI PD 8.4
1.9 ltr./77 kW TD PD DPF 8.4
2.0 ltr./81 kW TDI CR 8.4
2.0 ltr/103 kW TDI CR DPF 8.4
2.0 ltr./125 kW TDI CR 8.4 CAUTION
■ Other coolant additives that do not comply with the correct specifications can
above all significantly reduce the anticorrosion effect.
■ Any faults resulting from corrosion may cause a loss of coolant and can conse-
quently result in major engine damage! Note
On vehicles that are fitted with an auxiliary heater (auxiliary heating and ventila-
tion), the coolant capacity is approx. 1 l larger. Ð
162 General Maintenance

Radiator fan
First read and observe the introductory information and safety warn-
ings on page 158.
The radiator fan is driven by an electric motor and controlled according to the
coolant temperature.
After switching off the ignition, the radiator fan can intermittently continue to op-
erate for approx. 10 minutes.
ÐChecking the brake fluid
Fig. 136
Engine compartment: Brake fluid
reservoir
First read and observe the introductory information and safety warn-
ings on page 158.
The brake fluid reservoir is located in the engine compartment.
›
Switch off the engine.
› Open the bonnet
» page 160.
› Check the level of brake fluid in the reservoir
» Fig. 136. The level must be be-
tween the “MIN” and “MAX” markings.
When driving, a slight drop in the fluid level is caused by the wear-and-tear and
automatic adjustment of the brake pads, and is therefore perfectly normal.
There may be an indication of a leak in the brake system, however, if the fluid lev-
el drops significantly within a short time or if it drops below the “MIN” marking. If
the brake fluid level is too low, this is indicated by the warning light  lighting up
in the instrument cluster » page 19, Brake system .
ä
ä WARNING
If the fluid level has dropped below the MIN marking,  do not continue your
journey - risk of accident! Seek help from a
ŠKODA specialist garage.Ð Changing the brake fluid
First read and observe the introductory information and safety warn-
ings on page 158.
Brake fluid absorbs moisture. Over time it therefore absorbs moisture from the
environment. Excessive water in the brake fluid may be the cause of corrosion in
the brake system. The water content also lowers the boiling point of the brake
fluid.
The brake fluid must comply with the following standards or specifications:
› VW 50114;
› FMVSS 116 DOT4. WARNING
Using old brake fluid can result in severe stress on the brakes because of the
formation of vapour bubbles in the brake system. This greatly impairs the
braking efficiency and thus also the safety of your vehicle. CAUTION
Brake fluid damages the paintwork of the vehicle. Ð
ä
164 General Maintenance

Wheels and Tyres
Tyres
ä
Introduction
This chapter contains information on the following subjects:
Service life of tyres 171
Handling wheels and tyres 172
New wheels and tyres 172
Unidirectional tyres 173
Spare wheel 173
Full wheel trim 174
Wheel bolts 174
Wheel trim caps 174
Tyre control display 175
Wheel bolts 176
Winter tyres 176
Snow chains 176
WARNING
■ During the first 500 km, new tyres do not offer optimum grip and appropri-
ate care should therefore be taken when driving - risk of accident!
■ Never drive with damaged tyres - risk of accident!
■ Only use those tyres or wheel rims which have been approved by ŠKODA for
your model of vehicle. Failure to observe this instruction will adversely affect
the road safety of your vehicle - risk of accident!
■ The maximum permissible speed for your tyres must not be exceeded under
any circumstances - risk of an accident resulting from tyre damage and loss of
control of the vehicle.
■ If the inflation pressure is too low, the tyre must perform a higher rolling re-
sistance. At higher speeds the tyre will warm up as a result of this. This can
result in tread separation and a tyre blowout. WARNING (Continued)
■ Do not, where possible, replace individual tyres but at least replace them on
both wheels of a given axle at the same time. Always fit the tyres with the
deeper tread depth to the front wheels.
■ Never use tyres if you do not know anything about the condition and age.
■ You must have your tyres replaced with new ones at the latest when the
wear indicators have been worn down.
■ Worn tyres do not provide the necessary adhesion to the road surface at
high speeds on wet roads. One could experience
“aquaplaning” (uncontrolled
movements of the vehicle - “swimming” on a wet road surface).
■ Immediately replace damaged wheel rims or tyres.
■ Do not use summer or winter tyres that are older than 6 years or 4 years re-
spectively.
■ The wheel bolts must be clean and must turn easily. However, they must
never be treated with grease or oil.
■ If the wheel bolts are tightened to a too low tightening torque, the rim can
come loose when the car is moving - risk of accident! A tightening torque
which is too high can damage the bolts and threads and this can result in per-
manent deformation of the contact surfaces on the rim.
■ In case of incorrect treatment of the wheel bolts, the wheel can loosen
when the car is moving - risk of accident!
■ Observe the national legal regulations relating to the use of tyres and snow
chains. CAUTION
■ If a spare wheel is used that is not identical to the fitted tyres, the following
must be observed » page 173, Spare wheel.
■ The prescribed tightening torque of the wheel bolts for steel and light alloy
wheels is 120 Nm.
■ Protect the tyres from contact with oil, grease and fuel.
■ Replace any lost valve caps immediately. For the sake of the environment
Tyres which are insufficiently inflated increase your fuel consumption. £
170 General Maintenance

WARNING (Continued)
place the lifting jack on a solid surface or use a wide and stable base. Use a
non-slip base (e.g. a rubber foot mat) if the surface is smooth, such as cobbled
stones, tiled floor, etc.
■ Never start the engine with the vehicle sitting on the raised jack - danger of
suffering injury.
■ Only attach the lifting jack to the attachment points provided for this pur-
pose. CAUTION
■ The prescribed tightening torque of the wheel bolts for steel and light alloy
wheels is 120 Nm.
■ If the anti-theft wheel bolt is fastened too tightly, it can cause damage to the
anti-theft wheel bolt and adapter. Note
■ The anti-theft wheel bolt set and adapter can be purchased from a ŠKODA Serv-
ice Partner. ■ The national legal requirements must be observed when changing a wheel. ÐPreliminary work
First read and observe the introductory information and safety warn-
ings on page 179.
The following steps must be carried out before actually changing the wheel:
› In the event of a puncture, park the vehicle as far away as possible from the
flow of traffic. The place you choose should be level.
› Let all of the occupants get out.
While changing a tyre, the occupants of the
vehicle should not stand on the road (instead they should remain behind a crash
barrier).
› Switch off the engine and move the gearshift lever into
Neutral or move the
selector lever
for the automatic gearbox into position P .
› Firmly apply the
handbrake.
› If a trailer is connected, remove it.
› Remove the vehicle tool kit
» page 179 and the spare wheel » page 173 from
the boot. Ð
ä Changing a wheel
First read and observe the introductory information and safety warn-
ings on page 179.
Always change a wheel on a level surface as far as possible.
› Remove the full wheel trim
» page 174 or caps » page 174.
› In the case of light alloy wheel rims remove the wheel trim cap
» page 174.
› First of all slacken the anti-theft wheel bolt and then the other wheel
bolts » page 181.
› Jack up the vehicle until the wheel that needs changing is clear of the
ground » page 181.
› Unscrew the wheel bolts and place them on a clean surface (cloth, paper, etc.).
› Remove the wheel.
› Attach the spare wheel and slightly screw on the wheel bolts.
› Lower the vehicle.
› Alternately tighten the wheel bolts opposite each other using the wheel
wrench (crosswise) and then tighten the anti-theft wheel bolt » page 181.
› Reinstall the wheel trim/wheel trim cap or the caps. Note
■ All bolts must be clean and must turn easily.
■ Under no circumstances grease or oil the wheel bolts!
■ When fitting unidirectional tyres, ensure that the direction of rotation is cor-
rect »
page 170. Ð Subsequent steps
First read and observe the introductory information and safety warn-
ings on page 179.
The following steps must also be performed after changing the wheel.
› Stow and attach the replaced wheel in the spare wheel well using a special
screw » page 173 .
› Stow the vehicle tool kit in the space provided.
› Check
the tyre pressure
on the installed spare wheel as soon as possible.
› Have the
tightening torque of the wheel bolts checked with a torque wrench
as soon as possible.
› Change the damaged wheel or consult a ŠKODA specialist garage about repair
possibilities. £
ä
ä
180 Do-it-yourself