2012 Seat Mii fuel additives

177
At the filling station
Fuel
Introduction
You will find a factory-fitted sticker containing information on the type of
fuel for your vehicle on the inside of the fuel tank flap.
Additional information and warnings:
● ⇒ Booklet Maintenance Programme
● Refuelling ⇒ page 171
● Electronic power control and exhaust gases purification system
⇒ page 236
WARNING
Refuelling or handling fuel carelessly can cause an explosion or fire re-
sulting in serious burns and injuries.
● Fuel is a highly explosive, easily flammable substance.
● Observe current safety instructions and local regulations concerning
the handling of fuel.

Types of fuel
The type of fuel to use when refilling will depend on the vehicle's engine.
You will find a factory-fitted sticker containing information on the type of
fuel for your vehicle on the inside of the fuel tank flap.
SEAT recommends the use of sulphur-free or low sulphur fuel to reduce con-
sumption and prevent engine damage.
Possible types of fuelAlternative namesFurther information
91a)
RONNormal petrol, normal unlea-
ded petrol
⇒ page 17795 a)
RONPremium unleaded petrol (95
RON)
98 a)
RONPremium unleaded petrol (98
RON)
a) RON = Regulation Octane Number 
Petrol
Petrol types
Vehicles with petrol engines must refuel using unleaded petrol according to
European norm EN 228 ⇒ 
.
Petrol types are categorised according to their octane number (e.g. 91, 95,
98 or 99 RON (RON = “Research Octane Number”). You may use petrol with
a high octane number than the one recommended for your engine. Howev-
er, this has no advantage in terms of fuel consumption and engine power.
SEAT recommends refuelling with a low sulphur content or sulphur-free fuel
to reduce fuel consumption for petrol engines.
Petrol additives
The quality of the fuel influences running behaviour, performance and serv-
ice life of the engine. Therefore, it is recommended to refuel with good qual-
ity petrol containing the corresponding petrol additives. These additives will
help to prevent corrosion, keep the fuel system clean and prevent deposits
from building up in the engine.
If good quality petrol with additives are not available or engine problems
arise, the necessary additives must be added when refuelling ⇒ 
.
Vehicle diagramPrior to a journey...While drivingCare, cleaning and mainte-
nanceIf and whenTechnical Data

178At the filling station
Not all petrol additives have been shown to be effective. The use of unsuita-
ble petrol additives could seriously damage the engine and the catalytic
converter. Petrol additives with metal additives must never be used.
Available petrol additives for improvements in Anti-detonation ratings or oc-
tane ratings may contain metal additives ⇒ 
.
SEAT recommends “Genuine SEAT Additives for petrol engines”. These addi-
tives are available from Specialised workshops, who will inform you of their
application.
CAUTION
● Only use fuel with an octane rating that is in line with the norm EN 228,
otherwise significant damage could be caused to the engine and fuel sys-
tem. Furthermore, it could lead to a loss of performance with the conse-
quent engine fault.
● The use of unsuitable petrol additives could seriously damage the en-
gine and the catalytic converter.
● If, in exceptional circumstances, petrol with a lower octane rating to that
recommended is used, only use moderate engine speeds and a light throt-
tle. Avoid using full throttle and overloading the engine. Otherwise engine
damage may occur. Fill up with fuel of a suitable octane rating as soon as
possible.
● Do not refuel if the filler indicates that the fuel contains metal. LRP (lead
replacement petrol) fuels also contain high concentrations of metal addi-
tives. This could damage the engine!
● Just filling one full tank of leaded fuel or with other metal additives
would seriously impair the efficiency of the catalytic converter and could
damage it. 
Natural gas
Natural gas, in addition to others, can be in liquid form. Liquefied natural gas (LNG) is the result of heavy cooling of natural gas.
Therefore its volume is considerably reduced compared with compressed
natural gas (CNG). In vehicles with a natural gas engine, liquefied natural
gas cannot be directly refilled, given that the gas would expand excessively
in the vehicle gas tank.
Therefore, vehicles with a natural gas engine must only be refuelled using
compressed natural gas
⇒ 
.
Natural gas quality and consumption
Natural gas is divided into the groups H and L depending on its quality.
Gas type H has a superior heating power and inferior nitrogen and carbon
dioxide content than type L. The higher the heating power of the natural
gas, the lower the consumption will be.
However, the heating power and the proportion of nitrogen and carbon di-
oxide can fluctuate within the quality groups. Therefore, vehicle consump-
tion can also vary when using one type of gas only.
The engine management automatically adapts to the natural gas used ac-
cording to its quality. Therefore, different quality gases can be mixed in the
tank, without the need for comprehensive draining before applying a differ-
ent quality gas.
Natural gas and safety
If you can smell gas or suspect that there is a leak ⇒ 
:
● Stop the vehicle immediately.
● Switch the ignition off.
● Open the doors to appropriately ventilate the vehicle.
● Immediately extinguish cigarettes.
● Move away from the vehicle or switch off objects that may cause sparks
or a fire.
● If you continue to smell gas, do not continue driving!
● You should obtain professional assistance. Have the fault repaired. 

MirrorsConvenience functions . . . . . . . . . . . . . . . . . 95
Exterior mirrors . . . . . . . . . . . . . . . . . . . . . . . 95
Rear vision mirror . . . . . . . . . . . . . . . . . . . . . 95
Mobile telephone Using without an exterior aerial . . . . . . . . 227
Modifications . . . . . . . . . . . . . . . . . . . . . . 224, 233
Modifications to the vehicle . . . . . . . . . . . . . . 222 Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
N
Natural gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178 Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
refuelling . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
New engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
New tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
New tyres and wheels About your tyres and wheels . . . . . . . . . . . 211
Noises Assisted braking systems . . . . . . . . . . . . . 141
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Notes for the user . . . . . . . . . . . . . . . . . . . . . . . 233
Number of seats . . . . . . . . . . . . . . . . . . . . . . . . . 48
O
Octane rating . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Off road driving
Protection of the undercarriage . . . . . . . . . . 25
Oil See engine oil . . . . . . . . . . . . . . . . . . . . . . . 185
Older tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Onboard diagnostic system (ODB) . . . . . . . . . 227
Open Sliding/tilting electric panoramic sunroof . 44
Opening Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
from the exterior . . . . . . . . . . . . . . . . . . . . . . 34
from the inside . . . . . . . . . . . . . . . . . . . . . . . 36
The rear lid . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Opening doors individually . . . . . . . . . . . . . . . . 33
Operating fault Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . 119
Operating faults Radio reception . . . . . . . . . . . . . . . . . 117, 234
Optical parking system (OPS) . . . . . . . . . . . . . 150
Outside temperature indicator . . . . . . . . . . . . . 20
Overview Control lamps . . . . . . . . . . . . . . . . . . . . . . . . 15
Driver door . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Front view . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Instruments . . . . . . . . . . . . . . . . . . . . . . . . . 18
Rear view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Roof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Side view . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
The driver's side . . . . . . . . . . . . . . . . . . . . . . 10
Warning lamps . . . . . . . . . . . . . . . . . . . . . . . 15 P
Parking . . . . . . . . . . . . . . . . . . . . . . . . . . . 134, 136
Parking aid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Parking distance warning system . . . . . . . . . . 149 Fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Optical parking system (OPS) . . . . . . . . . . 150
Using high pressure cleaning apparatus . 199
Parking light . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Parking light remains . . . . . . . . . . . . . . . . . . . . . 87
ParkPilot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Pedals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50, 127
Petrol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177 Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . . 172
Refuelling . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Polishing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Pollen filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Pollution filter . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Portable Navigation System . . . . . . . . . . . . . . 229
Preparation Checking the engine coolant level . . . . . . 191
Tire Mobility Set . . . . . . . . . . . . . . . . . . . . . 258
Vehicle battery . . . . . . . . . . . . . . . . . . . . . . 194
Work in the engine compartment . . . . . . . 182
Preparations before each journey . . . . . . . . . . . . . . . . . . . 25
Changing a wheel . . . . . . . . . . . . . . . . . . . 251
298 Index