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OverviewControlsMaintenanceRepairsDataIndex
Refueling Fuel specificationsAs long as the filler nozzle is used prop-
erly, the fuel tank is full whenever the
nozzle shuts off the first time.
Refill early to avoid damaging the
catalytic converter; never attempt
to drive to the last drop of fuel in the
tank.<
Tank capacity: approximately 18.5 gal.
(70 liters), with a reserve capacity of
>BMW 525i, 530i: 2.0 gal. (8 liters)
>BMW 540i: 2.5 gal. (10 liters).
After refueling, close the filler cap
carefully, continuing until you hear
the detent engage. While closing, be
sure not to squeeze the strap which is
fastened to the cap. A loose or missing
cap will activate the message "CHECK
FILLER CAP" in the Check Control
* or
the Check Filler Cap lamp
*.<
The engine uses lead-free gasoline
only.
Required fuel:
>Premium Unleaded Gasoline,
min. 91 AKI
AKI = Anti Knock Index
Never use leaded fuel, as it would
cause permanent and irreversible
damage to the oxygen sensor and the
catalytic converter.<
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Capacities
Notes
Fuel tank
Reservegal. (liters)
gal. (liters)approx. 18.5 (approx. 70)
approx. 2.0 (approx. 8) Ð BMW 525i, 530i
approx. 2.5 (approx. 10) Ð BMW 540iFuel specification: page 25
Windshield washer system
with headlamp washer system
Intensive cleaning systemquarts (liters)
quarts (liters)
quarts (liters)approx. 3.7 (approx. 3.5)
approx. 6.3 (approx 6.0)
approx. 1.1 (approx 1.0)For details: page 139
Cooling system including
heater circuitquarts (liters) 11.1 (10.5) Ð BMW 525i, 530i
12.7 (12.0) Ð BMW 540iFor details: page 142
Engine oil and filter change quarts (liters) 6.9 (6.5) Ð BMW 525i, 530i
7.9 (7.5) Ð BMW 540i"BMW High Performance
Synthetic Oil."
For details: page 141
Manual transmission, automatic
transmission and differentialÐ Ð Lifetime fluid, no fluid
change required
