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205Checking and refilling levels
Petrol
Petrol types
The correct petrol types are listed on a sticker inside the fuel
tank flap.
Only unleaded petrol conforming to standard DIN EN 228 may be used for
vehicles with catalytic converters (EN = “European Standard”).
Fuel types are differentiated by the octane rating, e.g: 91, 95, 98 RON (RON
= “Research Octane Number”, unit for determining the knock resistance of
petrol). You may use petrol with a higher octane number than the one rec-
ommended for your engine. However, this has no advantage in terms of fuel
consumption and engine power.
CAUTION
● Even one tankful of leaded fuel would permanently impair the efficiency
of the catalytic converter.
● High engine speed and full throttle can damage the engine when using
petrol with an octane rating lower than the correct grade for the engine.
For the sake of the environment
Just one full tank of leaded fuel would seriously impair the efficiency of the
catalytic converter.
Petrol additives
Petrol additives improve the quality of the petrol.
The quality of the fuel influences the behaviour, performance and service
life of the engine.
This is why the petrol you use should carry suitable additives already inclu-
ded by the petrol industry, free of metals. These additives will help to pre-
vent corrosion, keep the fuel system clean and prevent deposits from build-
ing up in the engine.
If good-quality petrol with metal-free additives is not available or engine
problems arise, the necessary additives must be added when refuelling.
Not all petrol additives have been shown to be effective. The use of unsuita-
ble petrol additives may cause significant damage to the engine and the
catalytic converter. Metal additives should never be used. Metal additives
may also be contained in petrol additives for improving anti-detonation rat-
ings or octane ratings.
SEAT recommends “genuine Volkswagen Group fuel additives for petrol en-
gines”. These additives can be bought at SEAT Authorised Services, where
information on how to use them can also be obtained.
CAUTION
Do not refuel if the filler indicates that the fuel contains metal. LRP (lead re-
placement petrol) fuels contain high concentrations of metal additives. Us-
ing them may damage the engine!
Diesel
Diesel*
Diesel fuel must conform to DIN EN 590 (EN = “European Standard”). It
must have a cetane number (CN) of at least 51. The cetane number indi-
cates the ignition quality of the diesel fuel.
Notes on refuelling ⇒ page 200.
Safety First Operating instructions Practical Tips Technical Specifications
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