Before A Long Trip - Mercedes-Benz GL450 Operator's Manual

Operation
At the gas station
To prevent fuel vapors from escaping
into open air, fully insert filler nozzle
unit.
Only fill your tank until the filler nozzle
unit cuts out – do not top up or over-
fill.
Warning!
Overfilling of the fuel tank may create pres-
sure in the system which could cause a gas
discharge. This could cause the gas to spray
back out when removing the fuel pump noz-
zle, which could cause personal injury.
372
Replace the fuel cap by turning it
clockwise until it audibly engages.
Close the fuel filler flap.
You should hear the latch close shut.
i
Leaving the engine running and the fuel cap
open can cause the yellow fuel tank reserve
warning lamp to flash and the ? malfunction
G
indicator lamp (USA only) or the ± malfunc-
tion indicator lamp (Canada only) comes on.
For more information, see "Practical hints"
( page 433).
i
Only use premium unleaded gasoline with a
minimum Posted Octane Rating of 91 (average
of 96 RON/86 MON). Information on gasoline
quality can normally be found on the fuel pump.
For more information on gasoline, see "Premium
unleaded gasoline" ( page 555), see "Fuel re-
quirements" ( page 556), and the Factory Ap-
proved Service Products pamphlet.
Check regularly and before a long trip
Open the hood ( page 374).
1 Brake fluid
2 Coolant level
3 Windshield washer system and
headlamp cleaning system*
Engine oil level
For more information on engine oil, see
"Engine oil" ( page 376).