Refuelling; Petrol Engines; Diesel Engines - Alfa Romeo 156 Owner's Manual

REFUELLING

PETROL ENGINES

The anti-pollution devices
present on the vehicle im-
pose the use of four-star
unleaded fuel with an octane num-
ber (R.O.N.) above 95.
Under no circumstances
should conventional leaded
petrol be used, as this
would irreparably damage the cat-
alyst. If the tank is accidentally
filled with leaded fuel, even in
minute quantities, DO NOT START
THE ENGINE. Do not attempt to di-
lute the petrol with lead free fuel.
Drain the entire fuel circuit and
tank.
In order to prevent the vehicle being filled
with leaded petrol, the diameter of the filler
neck is smaller than the nozzle used on
pumps delivering leaded petrol.
If the catalyst is not
working properly, harmful
emissions reach the ex-
haust, resulting in environment pol-
lution.

DIESEL ENGINES

If the outside temperature is very low, the
diesel thickens due to the formation of paraf-
fins and could clog the diesel fuel filter.
In order to avoid these problems, different
types of diesel are distributed according to
the season: summer type, winter type arc-
tic type (mountains/cold areas).
If refuelling with diesel fuel not suitable for
the current temperature, mix diesel fuel with
DIESEL MIX additive in the proportions
stated on the can, putting first the antifreeze
in the tank and then the diesel fuel.
DIESEL MIX shall be added to diesel fuel
before the due to cold take place. Adding
it later will be worthless.
Topping up with diesel fuel not complying
with EN590 European Norm might make
it necessary to replace the filter more fre-
quently than indicated in the Service sched-
ule.
The car must only be filled
with diesel fuel for motor
vehicles, in compliance with
European Standard EN590. The use
of other products or mixtures may
irreparably damage the engine
with invalidation of the warranty
due to the damage caused. In the
event of accidentally filling with
another type of fuel, do not start
the engine and empty the tank. If
the engine has been run even for
only a very short time, in addition
to the tank, it is also necessary to
drain out the whole fuel circuit.
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