Fuel Grade; Petrol Engine - BMW 730i Owner's Handbook Manual

Fuel grade

Petrol engine

Never use fuel containing lead as this will
damage the catalytic converter.
Do not fill the tank with E85, i.e. fuel consisting
of 85Ξ ethanol or Flex Fuel. Otherwise the
engine and fuel supply system will be dam-
aged.<
The petrol should be sulphur-free or at least
ultra-low sulphur. Since the engine has a knock
control function, it can run on different grades of
fuel.
> Super Plus/premium plus, 98 RON.
Fill up with fuel of this grade to achieve the
nominal performance and fuel consumption
values.
> You can also run the engine on:
Premium-grade unleaded fuel, 95 RON.
This fuel is also known as:
DIN EN 228 or Eurosuper.
> The minimum permissible grade is:
Regular-grade unleaded fuel, 91 RON.
Do not fill the tank with any petrol below
the minimum specified grade. Otherwise
the engine could be damaged.<
National-market versions supplied
to run on leaded fuel*
This specification enables you to run the car on
leaded fuel, in addition to the grades listed
above: the minimum grade is likewise 91 RON.
Diesel engine
Do not refuel any rape seed methyl ester
– RME –, green diesel or petrol. After
refuelling a wrong fuel, do not start the engine,
otherwise there is danger of engine
After refuelling wrong fuel, do not drive further
and get in contact with the BMW Service.
> Your BMW's engine is rated to run on:
Diesel oil to DIN EN 590 standard.
The filler neck has been designed for fill-
ing from diesel fuel
Online Edition for Part no. 01 41 0 013 197 - © 02/07 BMW AG
damage.<
pumps.<
Winter-grade diesel
To ensure that the diesel engine operates relia-
bly during the cold season of the year, it must
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.<
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