Fuel For Liquid Gas Operation - Opel ASTRA Owner's Manual

Caution
Use of fuel that does not comply to
EN 590 or similar can lead to
engine powerloss, increased wear
or engine damage and may affect
your warranty.
Do not use marine diesel oils, heating
oils, Aquazole and similar diesel-
water emulsions. Diesel fuels must
not be diluted with fuels for petrol
engines.

Fuel for liquid gas operation

Liquid gas is known as LPG
(Liquefied Petroleum Gas) or under
its French name GPL (Gaz de Pétrole
Liquéfié). LPG is also known as
Autogas.
LPG consists mainly of propane and
butane. The octane rating is between
105 and 115, depending on the
butane proportion. LPG is stored
liquid at around 5 - 10 bar pressure.
The boiling point depends on the
pressure and mixing ratio. At ambient
pressure, it is between -42 °C (pure
propane) and -0.5 °C (pure butane).
Caution
The system works at an ambient
temperature of approx. -8 °C to
100 °C.
Full function of the LPG system can
only be guaranteed with liquid gas
which complies with the minimum
requirements of DIN EN 589.
Fuel selector
Driving and operating
Pressing LPG switches between
petrol and liquid gas operation as
soon as the required parameters
(coolant temperature, gas
temperature and minimum engine
speed) have been reached. The
requirements are usually fulfilled after
around 60 seconds (depending on
exterior temperature) and the first firm
press on the accelerator. The LED
status shows the current operating
mode.
1 off : petrol operation
1 flashes : checking conditions
for fuel transition to
liquid gas operation.
Illuminates if
conditions are fulfilled.
1 illumi‐ : liquid gas operation
nates
1 flashes 5 : liquid gas tank is
empty or failure in
times and
liquid gas system. A
extin‐
message is displayed
guishes
in the Driver
Information Centre.
If the fuel tank is empty, the engine
will not start.
189