Mercedes-Benz CL Operator's Manual page 82

Leaving the engine running and the fuel cap open can
cause the "CHECK ENGINE" lamp to illuminate, see
page 290 for notes on the "CHECK ENGINE" lamp.
Fuel tank capacity approx. 23.2 US gal (88.0 l).
This includes approx. 2.9 US gal (11.0 l) reserve.
Use premium unleaded gasoline:
CL 500, CL 55 AMG:
Posted Octane Index 91 (Average of 96 RON/86 MON).
CL 600:
Posted Octane Index 93 (Average of 98 RON/88 MON).
What you should know at the gas station
Instruments
Operation
and controls
Instrument
Driving
cluster display
Engine oil
Checking oil level, see instructions on pages 154
and 331.
CL 500 and CL 55 AMG only:
Fill quantity between upper and lower dipstick marking
level: 2.1 US qt (2.0 l).
Recommended engine oils, see Approved Service
Products sheet.
Coolant
For normal replenishing, use water (potable water
quality). For further information refer to page 333.
285
Practical hints Car care
Technical
Index
data