Skoda OCTAVIA - 05-2009 Owner's Manual page 221

220 Fuel
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
2
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.
emission of your vehicle is lowered up to 5%.
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
⇒ fig.
the fog light 204.
The outside temperature
lower than -10 °C
lower than -15 °C
lower than -25 °C
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.
Fig. 204 MultiFuel - power
socket
Duration of engine preheating
we recommend up to 1 hour
at least 1 hour
at least 2 hour