Fuel Grade; Petrol Engine; Diesel Engine - BMW 320i Owner's Handbook Manual

Fuel grade

Petrol engine

Never use fuel containing lead, as other-
wise the catalytic converter will be perma-
nently damaged.<
Ultra low sulphur petrol may also be used. Since
the engine has a knock control function, it can
run on different grades of fuel.
> Your BMW's engine is rated to run on:
Super Plus/premium plus fuel, octane
number 98 RON.
Fill up with fuel of this grade whenever pos-
sible, so that the nominal performance and
fuel consumption values are achieved.
> You can also run the engine on:
Premium-grade unleaded fuel, octane
number 95 RON.
This fuel is also sold under the following
designations:
DIN EN 228 or Eurosuper.
> The minimum permissible grade is:
Regular-grade unleaded fuel, octane
number 91 RON.
National-market specification for
leaded fuel*
This specification enables you to run the car on
leaded petrol, in addition to the fuel grades
listed above. The minimum approved grade is
91 RON.

Diesel engine

Do not use rapeseed methyl ester RME,
biodiesel or petrol. If the wrong type of
fuel has been added, do not start the engine,
otherwise you risk causing damage to
Contact BMW Service if the wrong type of fuel
has been added.
> Your BMW's engine is rated to run on:
Diesel oil to DIN EN 590 standard.
Winter-grade diesel
To ensure that the diesel engine operates relia-
bly during the cold season of the year, it must
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be run on winter-grade diesel oil, which garages
usually sell during the period in question. Fuel
filter heating is installed as standard equipment
to prevent the fuel from solidifying during oper-
ation.
Do not incorporate any additives, includ-
ing petrol, as these could cause damage
to the engine.<
it.<
95