2017 Seat Leon 5D fuel additives

Checking and refilling levels
Super unleaded 95 octane or normal 91 oc-
t ane u
n
leaded petrol
We recommend you use super 95 octane pet-
rol. If this is not available: normal 91 octane
petrol, with a slight decrease in power.
Super unleaded petrol with a minimum of 95
octanes
You should use super petrol with a minimum
of 95 octanes.
If super is not available, in an emergency you
may refuel with normal 91 octane petrol. In
this case only use moderate engine speeds
and a light throttle. Refuel with super as soon
as possible.
Super unleaded 98 octane or super 95 oc-
tane unleaded petrol
We recommend you use super plus 98 octane
petrol. If this is not available: super 95 oc-
tane petrol, with a slight decrease in power.
If super is not available, in an emergency you
may refuel with normal 91 octane petrol. In
this case only use moderate engine speeds
and a light throttle. Refuel with super as soon
as possible.
Petrol additives
The quality of the fuel influences the behav-
iour, power and service life of the engine.
This is why the petrol you use should carry
suitable additives already included by the petrol industry, free of metals. These addi-
tives
will help to prevent corrosion, keep the
fuel system clean and prevent deposits from
building up in the engine.
If good-quality petrol with metal-free addi-
tives is not available or engine problems
arise, the necessary additives must be added
when refuelling ››› .
Not al
l

petrol additives have been shown to
be effective. The use of unsuitable petrol ad-
ditives may cause significant damage to the
engine and the catalytic converter. Metal ad-
ditives should never be used. Metal additives
may also be contained in petrol additives for
improving anti-detonation ratings or octane
ratings ››› .
S EA
T r

ecommends “genuine Volkswagen
Group Fuel Additives for petrol engines”.
These additives can be bought at SEAT deal-
ers, where information on how to use them
can also be obtained. CAUTION
● Do not r ef

uel if the filler indicates that the
fuel contains metal. LRP ( lead replacement
petrol) fuels contain high concentrations of
metal additives. Using them may damage the
engine!
● Never refuel with fuels containing a large
proportion of
ethanol (for example, E50, E85).
This could damage the fuel system. ●
Jus t

filling one full tank of leaded fuel or
fuel containing other metal additives would
seriously impair the efficiency of the catalytic
converter.
● Only use fuel additives that have been ap-
prov
ed by SEAT. Octane boosting or anti-
knock additives may contain metal additives
that could seriously damage the engine or
the catalytic converter. These additives must not be used.
● High engine speed and full throttle can
damag
e the engine when using petrol with an
octane rating lower than the correct grade for
the engine. Note
● You m a

y use petrol with a high octane num-
ber than the one recommended for your en-
gine.
● In those countries where unleaded petrol is
not avai
lable, you may refuel with a fuel with
a low lead content. Diesel fuel
Please note the information on the inside of
the f
uel
t

ank flap.
We recommend the use of diesel fuel which
complies to European standard EN 590. If
diesel fuel which meets European standard
EN 590 is not available, the Cetane number
(CZ) must, at minimum, be 51. If the engine »
267
Technical data
Advice
Operation
Emergencies
Safety

Advice
is equipped with a particulate filter, the sul-
phur c ont
ent
of the fuel must be below 50
parts per million.
Winter-grade diesel
Summer fuel becomes thicker in winter and it
is more difficult to start the engine. For this
reason, petrol stations in some countries al-
so offer winter diesel with improved fluidity
when cold (winter-grade diesel).
Water in the fuel filter 1)
If your vehicle has a diesel engine and is
equipped with a fuel filter with a water sepa-
rator, the instrument panel may display the
following warning:  Water in the
fuel filter. If this is the case, take the
vehicle to a specialised workshop so that
they can drain the fuel filter. CAUTION
● The v ehic

le is not designed for the use of
FAME fuel (biodiesel). The fuel system would
be damaged if you used biodiesel.
● Do not mix fuel additives, the so-called
“thinners”, petro
l or similar additives with
diesel fuel.
● If poor-quality diesel fuel is used, it may be
neces
sary to drain the fuel filter more fre-
quently than is specified in the Maintenance Programme. We recommend having this done
by
a s

pecialised workshop. If water is allowed
to collect in the filter, this can cause engine
performance problems. Natural gas
Natural gas can be compressed or in liquid
form, a
d

dition to others.
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 vehi-
cles with a natural gas engine, liquefied nat-
ural gas cannot be directly refilled, as 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 ››› .
Nat ur
a

l 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
wil

l be.
However, the heating power and the propor-
tion of nitrogen and carbon dioxide can fluc-
tuate within the quality groups. Therefore, ve-
hicle consumption can also vary when using
a single type of gas only.
The engine management automatically
adapts to the natural gas used according to
its quality. Therefore, different quality gases
can be mixed in the tank, without the need
for comprehensive draining before applying a
different quality gas.
Updated information relating to natural gas
quality is displayed on the instrument panel
›››  page 36.
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 v
ehic

le.
● Extinguish cigarettes immediately.
● Move away from the vehicle or switch off
obj
ects that may cause sparks or a fire. 1)
Valid for the market: Algeria.
268

Index
O O domet
er
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
reset button . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
trip recorder . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Oil change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Oil properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
On-board computer see Driver information system . . . . . . . . . . . . . . 36
One-touch opening and closing electric windows . . . . . . . . . . . . . . . . . . . . . . . . 138
Open and close . . . . . . . . . . . . . . . . . . . . . . . . . . 125 panoramic sliding sunroof . . . . . . . . . . . . . . . . 138
Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
fuel tank flap . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
panoramic sliding sunroof . . . . . . . . . . . . . . . . 138
the fuel tank cap . . . . . . . . . . . . . . . . . . . . . . . . 264
windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Opening and closing . . . . . . . . . . . . . . . . . . . . . . . 15 bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
by remote control . . . . . . . . . . . . . . . . . . . . . . . 127
fuel cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
fuel tank flap . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
in the door cylinder . . . . . . . . . . . . . . . . . . . . . . 15
rear lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
with the central locking switch . . . . . . . . . . . . 128
Outside temperature . . . . . . . . . . . . . . . . . . . . . . . 42
P Paint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259 care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
Paintwork code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290 Panoramic sliding sunroof
clos ing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
convenience closing . . . . . . . . . . . . . . . . . . . . . 139
convenience opening . . . . . . . . . . . . . . . . . . . . 139
convenience opening and closing . . . . . . . . . 137
fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
roll-back function . . . . . . . . . . . . . . . . . . . . . . . 139
Parking . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185, 194
Parking aid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237 adjusting the display and audible warnings . 241
automatic activation . . . . . . . . . . . . . . . . . . . . 240
malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
parking aid plus . . . . . . . . . . . . . . . . . . . . . . . . 239
rear parking aid . . . . . . . . . . . . . . . . . . . . . . . . 238
sensors and camera: cleaning . . . . . . . . . . . . . 259
surrounds warning . . . . . . . . . . . . . . . . . . . . . . 239
towing bracket . . . . . . . . . . . . . . . . . . . . . . . . . 242
visual indication . . . . . . . . . . . . . . . . . . . . . . . . 241
Parking aid system see Parking aid . . . . . . . . . . . . . . . . . . . . . . . . . 237
Parking brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184 activate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
automatic activation . . . . . . . . . . . . . . . . . . . . 184
automatic release . . . . . . . . . . . . . . . . . . . . . . . 183
emergency braking function . . . . . . . . . . . . . . 184
release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Parking distance warning system see Parking aid . . . . . . . . . . . . . . . . . . . . . . . . . 237
Parking (automatic gearbox) . . . . . . . . . . . . . . . . 194
ParkPilot see Parking aid . . . . . . . . . . . . . . . . . . . . . . . . . 237
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256
Passenger see Correct sitting position . . . . . . . . . 75, 76, 77 Passenger-side instrument panel
left -hand drive . . . . . . . . . . . . . . . . . . . . . . . . . . 12
right-hand drive . . . . . . . . . . . . . . . . . . . . . . . . . 13
Passenger seat backrest folding down . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
lifting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Pedals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Petrol additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266
refuelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266
Plastic parts: cleaning . . . . . . . . . . . . . . . . 260, 261
Polishing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
Positioning seat belts during pregnancy . . . . . . . . . . . . . . . . . . . . . . . . 84
seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Power management . . . . . . . . . . . . . . . . . . . . . . . 201
Power socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Power steering see Electromechanical steering . . . . . . . . . . . . 198
Pre-heating system control lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Preheating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Preheating the engine . . . . . . . . . . . . . . . . . . . . . 181
Press & Drive starter button . . . . . . . . . . . . . . . . . . . . . . . . . . 180
starting the engine . . . . . . . . . . . . . . . . . . . . . . 181
Progressive steering . . . . . . . . . . . . . . . . . . . . . . 198
Puncture action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
R Racks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Radar sensor . . . . . . . . . . . . . . . . . . . . . . . . 212, 217
Radio-operated remote control see Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Radio screen: cleaning . . . . . . . . . . . . . . . . . . . . 261
322