2004-2012 Skoda Octavia 4 Door General Maintenance -> Biofuel Ethanol E85* User Manual
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General Maintenance -> Biofuel Ethanol E85* for Your Skoda Octavia 4 Door Second Generation (2004-2012)

Fuel 219  
Fuel  
Petrol  
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  
•
Grades of petrol  
•
There are various grades of petrol. Please read ⇒ page 271, “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. 206.  
damage at high revolutions or severe engine loading.  
Biofuel Ethanol E85*  
A distinction is made between unleaded and leaded petrol. All Škoda vehicles with  
petrol engines are equipped with a catalytic converter and must therefore be only  
driven with unleaded petrol. Unleaded petrol complies with the standard  
DIN EN 228.  
Ethanol E85*  
Only valid for vehicles with 1.6/75°kW MultiFuel engine.  
The individual grades of petrol 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.  
Biofuel Ethanol E85 consists of 85% bioethanol and 15% unleaded petrol  
complying 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, see Owner's Manual.  
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.  
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 vehicle or  
high engine speeds and not at full throttle. During this process decrease the idling  
speed.  
If, in an emergency, the only fuel available 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, however, be no advantages gained by this in  
terms of engine performance and fuel consumption!  
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 damaged in the event of an accident and  
fuel may leak out.  
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”.  
Using the system  
Safety  
Driving Tips  
General Maintenance  
Breakdown assistance  
Technical Data  
220 Fuel  
Operation in winter  
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 low quantities of impurities, which can  
lead to corrosion.  
•
•
For the sake of the environment  
If you use Ethanol E85, the CO emission of your vehicle is lowered up to 5%.  
2
Fig. 204 MultiFuel - power  
socket  
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.  
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. 204.  
•
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 outside temperature  
lower than -10 °C  
Duration of engine preheating  
we recommend up to 1 hour  
at least 1 hour  
•
The interval of 15 000 km applies for the oil change.  
lower than -15 °C  
lower than -25 °C  
at least 2 hour  
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 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.  
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.  

Related Topics

General Maintenance
Taking care of your vehicle and cleaning the vehicle General Care of the exterior of vehicle Care of the interior of vehicle Fuel Petrol Diesel Refuelling Inspecting and replenishing Engine compartment Engine oil Cooling system Brake fluid Battery Windshield washer system Wheels and Tyres Wheels Accessories, changes and replacement of parts Accessories and replacement parts Technical changes Vehicles of the group N1

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