fuel additives SKODA ROOMSTER 2011 1.G Owner's Manual

Fuel
Petrol
Unleaded petrol Your vehicle can only be operated with
unleaded petrol, which complies with the
standard EN 228 (In Germany: standard DIN 51626 - 1 or E10 for unleaded fuel with
octane rating 95 RON and 91 RON or DIN 51626 - 2 or E5 for unleaded fuel with
octane rating 95 RON and 98 RON). On the inside of the fuel filler flap, you will
find the information regarding the RON required by your engine ⇒
 fig. 120 - right.
Prescribed fuel - unleaded petrol 95/91 RON
Use unleaded fuel with the octane rating 95 RON. You can also use unleaded pet-
rol 91 RON, but this leads to a slight loss in performance.
If, in case of necessity, the vehicle must be refuelled with petrol of a lower octane
number than the one prescribed, you must continue driving at medium engine
speeds and low engine load. Driving at high engine revs or a high engine load can
severely damage the engine! Refuel as soon as possible with petrol of the prescri-
bed octane number.
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. You must continue driving at
medium engine speeds and minimum engine load. Driving at high engine revs or a
high engine load can severely damage the engine! Refuel as soon as possible with
petrol of the prescribed octane number.
Even in case of necessity, you must not use petrol of a lower octane number than
91 RON, otherwise the engine can be severely damaged!
You can find further information on refuelling ⇒ page 148.
Unleaded petrol with higher octane number
You can make unlimited use of unleaded petrol which has a higher octane number
than the one prescribed.
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 increase
or a lower fuel consumption. On vehicles with prescribed unleaded petrol
min. 95 RON, the use of petrol with a
higher octane number than 95 RON does not result in a power increase or a lower
fuel consumption.
Prescribed fuel - unleaded petrol 98/95 RON
Use unleaded fuel with the octane rating 98 RON. You can also use unleaded pet-
rol 95 RON, but this leads to 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. You must
continue driving at medium engine speeds and minimum engine load. Driving at
high engine revs or a high engine load can severely damage the engine! Refuel as
soon as possible with petrol of the prescribed octane number.
Even in case of necessity, you must not use petrol of a lower octane number than
91 RON, otherwise the engine can be severely damaged!
Fuel additives
Your vehicle can only be operated with unleaded petrol, which complies with the
standard EN 228 (in Germany: standard DIN 51626 - 1 or E10 for unleaded fuel with
octane rating 95 RON and 91 RON or DIN 51626 - 2 or E5 for unleaded fuel with
octane rating 95 RON and 98 RON). These meet all requirements for troublefree
engine operation. Therefore, we do not recommend the use of fuel additives. CAUTION
● All
ŠKODA vehicles with petrol engines are equipped with a catalytic converter
and must be driven only with unleaded petrol. Filling the tank even only once with
leaded petrol will result in the catalytic converter being destroyed!
● If you use petrol with a lower octane number than the one prescribed, the en-
gine can be severely damaged!
● The use of improper fuel additives can cause serious damage to the engine or
the catalytic converter. In no case may fuel additives with metal components be
used, especially not with manganese and iron content.
● Fuels with metallic content may not be used. Risk of engine or catalytic con-
verter damage!
● LRP (lead replacement petrol) fuels with metallic components may not be
used. Risk of engine or catalytic converter damage!  147
Fuel Using the system Safety Driving Tips General Maintenance Breakdown assis-
tance Praktik Technical data

Diesel
Diesel fuel Your vehicle can only be operated with
diesel fuel, which complies with the stand-
ard EN 590 (standard DIN 51628 in Germany, standard ÖNORM
C 1590 in Austria,
GOST R 52368-2005/EN 590:2004 in Russia).
Fuel additives
You must not use fuel additives, so-called “flow improvers” (petrol and similar
products) in diesel fuel.
You can find information on refuelling ⇒ page 148, Refuelling. CAUTION
● 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). Filling the tank even only
once with diesel fuel which does not comply with the standard, can result in dam-
age to the engine parts, the lubrication system, the fuel and exhaust system.
● If by mistake you have refuelled with a different fuel other than the diesel fuel
which complies to the above mentioned standards (e.g. petrol), on no account
start the engine! Severe damage damage is possible! Contact a specialist garage.
● Water which has collected in the fuel filter can result in engine problems.
● 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 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 re-
sult in operational problems because the diesel becomes viscous as a result of
paraffin separation.
It is therefore the case that the standard EN 590 (standard DIN 51628 in Germany,
standard ÖNORM C 1590 in Austria, GOST R 52368-2005/EN 590:2004 in Russia)
is the diesel fuel class prescribed for certain periods of the year which can also be
purchased 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 different climatic conditions that diesel fuels
available have a different temperature characteristic. The authorised
ŠKODA Serv-
ice Partners and filling stations in the country concerned will be able to provide
you with information 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. CAUTION
It is not permitted to add the various fuel additives on the market, including pet-
rol, to diesel fuel in order to improve its flow properties. 
Refuelling Fig. 120 Right rear side of the vehicle: Fuel filler flap/fuel filler flap with cap unscrewed
Opening the fuel filler cap
–
Open the fuel filler flap with the hand ⇒
 fig. 120 - left.
– Hold the fuel tank cap of the fuel filler tube with one hand and unlock it by
turning with the vehicle key to the left.
– Unscrew the fuel filler cap anti-clockwise and place the fuel filler cap from
above on the fuel filler flap ⇒ fig. 120 on the right.
Closing fuel filler cap
– Screw on the cap by turning it to the right until it is heard to lock.
– Hold the fuel filler cap on the fuel filler tube with one hand and lock it by turn-
ing the vehicle key to the right and withdraw the key. £148
Fuel