Petrol - Seat ALTEA Owner's Manual

202 Checking and refilling levels
WARNING
● If there is a smell of gas or a suspected leak, stop the vehicle immedi-
ately and switch off the ignition. Open the doors to ventilate the vehicle.
Do not carry on driving! Take the vehicle to a specialised workshop and
have the fault repaired.
● Immediately extinguish any cigarettes and remove from the vehicle
any objects which might produce a spark or cause a fire, and switch off
immediately if gas is smelt or a leak is detected.
● LPG tanks are subject to pressure and must be checked regularly. The
owner of the vehicle must check that these services are performed cor-
rectly.
● When parking the vehicle in a closed area (for example in a garage),
make sure that there is adequate ventilation, either natural or mechani-
cal, to neutralise the LPG in the event of a leak.
Note
For any fault in the LPG system, please refer to the SEAT web page, which
lists the workshops authorised to repair these faults.

Petrol

Petrol types
The recommended fuel 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").
Petrol types are categorised according to their octane number, e.g. 91, 95,
98 RON (RON = "research octane number"). You may use petrol with a high-
er octane number than the one recommended for your engine. However,
this has no advantage in terms of fuel consumption and engine power.
CAUTION
● Petrol with standard EN 228 may be mixed with small quantities of etha-
nol. However, so-called "bioethanol fuels" available at commercial estab-
lishments with reference E50 or E85, and which contain a high percentage
of ethanol, may not be used, as they will damage the fuel system.
● 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.
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Petrol additives
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
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