2010 OPEL COMBO fuel

109
Driving and operation
Overrun
zThe fuel supply is automatically shut off
during overrun, e.g. when the vehicle is
being driven down long gradients or
when braking 3107.
zTo enable the overrun cut-off to come
into action and save fuel, do not
accelerate or declutch during overrun.
Correct gear selection
zHigh revs increase engine wear and fuel
consumption.
zDo not race your engine. Avoid driving at
high engine speeds.
Making use of the tachometer helps to
save fuel. Drive in a low engine speed
range for each gear as much as possible
with uniform engine speeds. Drive as
often as possible in top gear, select the
next higher gear as soon as possible,
and only change down when the engine
is no longer running perfectly smoothly.
High speed
zThe higher the speed, the higher the
consumption and the noise level. At top
speed, you consume a great deal of fuel
and produce excessive noise and
exhaust emissions. zSlightly releasing the accelerator pedal
results in distinct fuel savings with no
major loss of speed.
Drive at no more than around three
quarters of maximum speed and you will
use up to 50 % less fuel, without losing a
great deal of time.
Tyre pressure
zInadequate tyre pressure, leading to
higher road resistance, costs money in
two ways: for more fuel and increased
tyre wear.
zRegular checks (every 14 days) pay off.
Electrical loads
zThe power consumption of electrical
equipment increases fuel consumption.
zSwitch off all auxiliary electrical loads
(e.g. air conditioning3, heated rear
window) when not needed.
Roof racks
zDue to air resistance, a roof load can
increase fuel consumption by approx.
1 l/100 km.
zRemove them if they are not being used. Repair and maintenance
zImproper repairs or adjustment and
maintenance work can increase fuel
consumption. Do not carry out work on
the engine yourself.
You may out of ignorance infringe
environmental laws by not disposing of
materials properly.
Appropriate parts might not be recycled.
Contact with some of the materials
involved may pose a health hazard.
zWe recommend that repair and
maintenance be entrusted to your Opel
Partner.
Extreme driving conditions
zGoing up steep slopes, cornering, driving
on poor roads and winter driving all
increase fuel consumption.
Fuel consumption increases dramatically
in urban traffic and at winter
temperatures, especially on short trips
when the engine operating temperature
is not reached.
zFollowing the instructions given above
will minimise consumption under these
conditions.

110 Driving and operationFuels, refuellingFuel consumption
Fuel consumption is determined under
specific driving conditions 3186.
Special equipment increases the weight of
the vehicle. As a result, they can increase
fuel consumption and reduce the specified
maximum speed.
There is increased friction between engine
and transmission parts during the first
1000 kilometres. This increases fuel
consumption. Fuel for petrol engines
Only use unleaded fuel that complies with
DIN EN 228.
Fuels with ethanol content greater than 5 %
may only be used if the vehicle has been
specifically developed and approved for
these fuels.
Use fuel with the recommended octane
rating (value in bold 3184). Use of fuel
with too low an octane rating can reduce
engine power and torque and slightly
increases fuel consumption. Fuel for diesel engines
Only use diesel fuel that complies with
DIN EN 590. The fuel must have low
sulphur content (max. 50 ppm).
Do not use marine diesel oils, heating oils
or entirely or partially plant-based diesel
fuels, such as rape seed oil or bio diesel,
Aquazole and similar diesel-water
emulsions. Diesel fuels must not be diluted
with fuels for petrol engines.
The flow and filterability of diesel fuel are
temperature-dependent. When
temperatures are low, refuel with diesel fuel
with guaranteed winter properties.
Fuel for natural gas operation
Use natural gas with a methane content of
approx. 78-99 %. L-gas (low) has approx.
78-87 % and H-gas (high) has approx.
87-99 %. Biogas with the same methane
content can also be used if it has been
chemically prepared and desulphurised.
Liquid gas or LPG must not be used. Caution
Use of fuel with too low an octane rating
could lead to uncontrolled combustion
and engine damage.

111
Driving and operation
Picture no: 15829t.tif
Fuel filler cap
Only a Opel Genuine fuel filler cap provides
full functionality. Diesel-engined vehicles
have special fuel filler caps.
Refuelling Fuel filler neck at right rear side of vehicle.
Picture no: 11628s.tif
With the central locking system3, the tank
flap is unlocked together with the doors3
324.
Open the tank flap. To prevent damage,
the right-hand sliding door cannot be fully
opened if the tank flap is open.
Unlock the fuel filler cap with the ignition
key 3, unscrew and suspend from tank
flap.
The fuel tank has a limiting system which
prevents overfilling of the tank.
6
9 Warning
Before refuelling, switch off engine and
any external heaters with combustion
chambers 3 (identified by sticker on
tank flap). Switch off any mobile
phones.
Follow the operating and safety
instructions of the filling station when
refueling.
9 Warning
Fuel is flammable and explosive. No
smoking. No naked flames or sparks.
If you can smell fuel in your vehicle, have
the cause of this rectified immediately
by a workshop.

112 Driving and operationCorrect filling depends to a large extent on
proper operation of the fuel dispensing
pump:
1. Fully insert the pump nozzle and switch it
on.
2. After the automatic cut-off, the nominal
capacity of the fuel tank can be
obtained by topping up with two doses
of fuel. Make sure the nozzle is fully
inserted.
To close, place fuel filler cap in position and
turn, overcoming the resistance until the
ratchet on the cap engages audibly. Lock
the fuel filler cap with the ignition key 3.
Close fuel tank cover. Refuelling, natural gas 3
The fuel tank filler neck for natural gas and
petrol is located on the right rear side of the
vehicle.
Picture no: 12292t.tif
Remove the cap from the natural gas filler
neck.
The tank action must be fully completed,
e.g. bleeding the filler neck.
After refuelling, refit the cap. Caution
Wipe off any overflowing fuel
immediately.
9 Warning
Care must be taken when handling
natural gas!
Before refuelling, be sure to switch off
the engine and any auxiliary heater with
combustion chamber.
Natural gas is flammable and explosive.
Therefore, avoid naked flames and
sparks when handling or in the vicinity of
natural gas. Do not smoke! This also
applies where natural gas can only be
detected by its characteristic smell.
If there is a smell of natural gas in the
vehicle, have cause established
immediately by a workshop that is
authorised to maintain natural gas
vehicles and have the problem
remedied.
9 Warning
When refuelling vehicles with natural
gas, be sure to follow the operational
and safety regulations of the filling
station.
The gas tank must only be replenished
at filling stations that refuel with
temperature compensation with a
maximum output pressure of 250 bar.

113 Driving and operation
Refuelling when driving abroad
When refuelling in another country, please note that country-specific expressions are used
for natural gas vehicles.
German Erdgasfahrzeuge Erdgas als Kraftstoff
English NGVs = Natural Gas Vehicles CNG = Compressed Natural Gas
French Véhicules au gaz naturel
– or –
Véhicules GNVGNV = Gaz Naturel (pour) Véhicules
– or –
CGN = carburant gaz naturel
Italian Metano auto Metano (per auto)
Picture no: 16882s.tif
Fuel selector switch, natural gas 3
Switch
Y can be used to switch between
petrol and natural gas operation. A
changeover is not possible during a high
load, such as powerful acceleration or full
throttle. The status of the LED indicates
which type of fuel is in use.
As soon as the natural gas tank is empty,
the vehicle automatically switches to petrol
operation until the ignition is switched off.
This is indicated by prolonged flashing of
the LED.
6 Natural gas
operation=LED off.
Petrol operation = LED comes on.

114 Driving and operationIf the natural gas tank is then not refilled,
petrol operation must be manually
selected the next time the engine is started.
This is necessary in order to prevent
damage to the catalytic converter
(overheating due to irregular fuel supply).
If the switch is pressed several times within
a brief period of time, a changeover
inhibitor is activated. The engine continues
with the current type of fuel. The inhibitor
remains active until the ignition is switched
off.
Minor power and torque losses are to
be expected during petrol operation,
therefore adjust driving style (e.g.
overtaking) and vehicle load (e.g. through
trailer load) accordingly.
Every 6 months, run the petrol tank down
to the reserve zone before refuelling. This is
necessary for petrol operation to obtain
the required system functionality and fuel
quality.Note:
Refuel and operate only w i t h f u e l o f a t l e a s t
95 octane (RON). Upon accidental
refuelling with petrol of an
octane rating (RON) less than 95, avoid
driving with fuel load (e.g. heavy
acceleration, full throttle), allow the tank to
reach the reserve zone and refuel with the
correct petrol.
In order to prevent corrosion in the tank,
please refuel the vehicle to the maximum
level at regular intervals.
Picture no: 6448u.tif
Catalytic converter, engine
exhaust Catalytic converter
The catalytic converter reduces the
amount of harmful substances in the
exhaust gas, such as carbon monoxide
(CO), hydrocarbons, (CH) and nitrous
oxide (NO
x).
Fuel grades other than those listed on
3110, 184 (e. g. LRP = Lead Replacement
Petrol or leaded fuel) could damage the
catalytic converter or electronic
components.
Caution
Damage to the catalytic converter or the
vehicle may result if the following points
are not observed.

115
Driving and operation
zIn the event of misfiring, uneven engine
running, a clear reduction in engine
performance or other unusual problems,
have the cause of the fault rectified by a
workshop as soon as possible. In an
emergency, driving can be continued for
a short period, keeping vehicle speed
and engine speed low.
zIf unburnt fuel enters the catalytic
converter of a petrol engine, this may
result in overheating and irreparable
damage to the catalytic converter.
You should therefore avoid
unnecessarily long use of the starter
when starting off, running the tank dry
and starting the engine by pushing or
towing.
Picture no: 18087s.tif
Controlling exhaust emission
Design measures, primarily in the fuel
injection system and ignition system zones
in combination with the catalytic converter,
the amount of hazardous substances in the
exhaust emissions, such as carbon
monoxide (CO), hydrocarbons (CH) and
nitrogen oxides (NO
x), are reduced to a
minimum.
Picture no: 11717s.tif
Exhaust gas control indicator
Z
Illuminates when the ignition is switched on
and during the start attempt. Goes off
shortly after the engine starts running.
Illumination whilst the engine is running
indicates a fault in the emission control
system. The permissible emission limits
may be exceeded. Contact a workshop for
assistance immediately.
Illumination with the engine running
indicates a fault that can cause damage to
the catalytic converter. It is possible to
continue driving without causing damage
by slowing down until the flashing stops
and the control indicator illuminates.
Contact a workshop for assistance
immediately.

116 Driving and operation
Picture no: 11718s.tif
Control indicator
A
for engine electronics

Illuminates for a few seconds when ignition
is switched on.
If it comes on when the engine is running,
there is a fault in the engine or transmission
electronics. The electronics switch to the
emergency running programme, fuel
consumption may increase and the
driveability of the vehicle may be affected.
In some cases the fault can be remedied by
switching the engine off and starting it
again. If the control indicator continues to
illuminate whilst the engine is running,
contact a workshop for assistance in
remedying the cause of the fault. If it illuminates briefly, but does not recur, it
is of no significance.
If A illuminates, there may be water in the
diesel fuel filter 3. Have the fuel filter
checked for water residue by a workshop
3177.
I f i t f l a s h e s a f t e r t h e i g n i t i o n i s s w i t c h e d o n ,
there is a fault in the immobiliser system.
The engine cannot be started 321.
Engine exhaust Diesel particle filter 3
The diesel particle filter system filters
harmful soot particles out of the exhaust
gases. The system includes a self-cleaning
function that run automatically during
driving. The filter is cleaned by burning off
the soot particles at high temperature. This
process takes place automatically under
set driving conditions and may take up to
25 minutes. Fuel consumption may be
higher during this period. The emission of
smells and smoke during this process is
normal.
9 Warning
Engine exhaust gases contain poisonous
carbon monoxide, which is colourless
and odourless and could be fatal if
inhaled.
If exhaust gases penetrate the vehicle,
open windows and contact a workshop
for assistance.
Avoid driving with an open tailgate.
Otherwise, exhaust gases could get into
the interior.