Mercedes-Benz G 2012 Service Booklet page 8

Introduction
6
• SPARK PLUGS
Spark plugs should be replaced according
to the specified maintenance interval.
Severe operating conditions (frequent
starting and stopping, excessive idling,
sustained fast highway driving) may
call for spark plugs to be replaced
correspondingly sooner.
• COOLANT
Coolant should be checked for the
proper concentration before the start
of the winter season (or once a year in
hot regions). Have the coolant (water/
anticorrosion/antifreeze mixture)
replaced at the specified maintenance
interval for your vehicle model.
The coolant for the low temperature
circuit should be replaced every 250,000
KM or 15 years.
Replacement of coolant may be required
more frequently if coolant is not
maintained according to instructions and/
or other than approved anticorrosion/
antifreeze products for your vehicle are
being used. For instructions on coolant,
see "Coolants" in your vehicle Operator's
Manual. For a listing of approved
anticorrosion/antifreeze products for
your vehicle, contact your authorized
Mercedes-Benz Dealer.
• BRAKE FLUID
Brake fluid should be replaced every
two years, preferably in the spring. We
recommend that you only use brake
fluid approved by Mercedes-Benz. A
reminder for the next scheduled brake
fluid replacement is affixed in the engine
compartment.
G
Warning!
Please make sure you read the technical documentation, such as the Operator's Manual and
workshop information, before carrying out any maintenance work.
Wear items
While the Mercedes-Benz Maintenance
System calls for inspection of certain
wear items, the system does not make
any judgment on the condition of these
wear items. Only a qualified technician
can determine if a wear item needs to be
replaced.