BMW F 800 GS 2012 Rider's Manual page 70

Leaded fuel will destroy the
5
catalytic converter.
Use only unleaded fuel.
68
Make sure the ground is level
and firm and place the motor-
cycle on its side stand.
The volume of the tank can
be utilised to the full only
when the motorcycle is propped
z on its side stand.
Open the protective cap.
Use the ignition key to unlock
the fuel filler cap and pop the
cap open.
Refuel with fuel of the grade
stated below; do not fill the
tank past the bottom edge of
the filler neck.
If filling occurs after the fuel
level has gone below the
reserve limit, the amount filled
must be greater than the reserve
amount for the new fuel level to
be recognised and the warning
light to switch off.
The "usable fuel filling
amount" specified in the
technical data is the amount that
can be refilled if the tank has
been fully depleted beforehand
and the engine has subsequently
cut out due to insufficient fuel.
Recommended fuel
grade
Super unleaded
95 ROZ/RON
89 AKI
with regular unleaded (RON
OE
91)
Regular unleaded (slight
power- and consumption-
related restrictions)
91 ROZ/RON
87 AKI
Usable fuel capacity
approx. 16 l
Reserve fuel
min 2.7 l