Skoda Octavia Operating Instructions Manual page 192

when the engine is restarted. This is not due to any system leakages but a
drop in pressure in the natural gas fuel tank due to technical reasons after a
cooling phase directly after refuelling.
The maximum lifetime of the gas tank is 20 years.
The capacity of the natural gas fuel tank is approximately 15 kg.
The capacity of the gasoline fuel tank is about 50 litres, of which about 6
lighters are in reserve.
WARNING
When refuelling, never get into the vehicle. If you have to get into your
■
vehicle in exceptional cases, touch a metal surface before you touch the
filling coupling again. This will avoid electrostatic discharges, which may
generate sparks. Sparks can cause a fire during refuelling.
Natural gas is highly explosive and highly flammable.
■
Note
During the filling process sounds are heard which are harmless. If you are un-
sure which service station staff to use, ask the petrol station staff.
CNG
Fig. 195 Position of the CNG label(s).

Read and observe and
A G-TEC-vehicle may be operated with CNG and petrol.
In some countries, national legislation requires that vehicles with CNG opera-
tion be identified by one of the labels
Position of the CNG label » Fig. 195.
on page 185 first.
» Fig. 195.
Natural gas quality and consumption
Depending on the natural gas supplier, the natural gas quality (heating value)
may vary. The engine control unit adjusts automatically to the natural gas
quality.
Automatically switching over from natural gas mode to petrol mode
The vehicle automatically switches from natural gas to petrol, for example, if
one of the following cases occurs.
›
With an empty gas tank or not enough pressure in the tank.
›
After refuelling with natural gas.
›
At very low surrounding temperatures.
Use all the petrol in the fuel tank at lease once every six months until the
warning light illuminates and then refill with petrol. This is to ensure that

the fuel system functions correctly and to preserve the quality of the fuel.
Gas smell
If you smell gas, proceed as follows.
›
Stop the vehicle.
›
Put out cigarettes.
›
Switch off the ignition.
›
Open the doors and the boot lid to ventilate the vehicle sufficiently.
›
Remove any spark-producing or incendiary items from the vehicle and switch
off immediately.
›
Do not continue to drive if the odour persists.
Seek help from a specialist garage to correct the gas system fault.
Regular gas system checks must be carried out at a specialist workshop on
natural gas-powered vehicles.
WARNING
When operating a CNG-powered vehicle, the national legal requirements
must be observed.
WARNING
Do not underestimate the smell of gas in the car or when refuelling - risk of
fire, explosion and injury.
189
Inspecting and replenishing