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Example
Checking Coolant Level
The coolant level can be checked
visually at the transparent coolant
reservoir.
To check the coolant level, the vehicle
must be parked on level ground.
Check coolant level only when coolant
is cold:
The coolant should reach the rib in the
filler neck. Also see marking (1) on
reservoir.
Warning!
• Use extreme caution when
opening the hood if there are any
signs of steam or coolant leaking
from the cooling system.
• Do not remove pressure cap on
coolant reservoir if engine
temperature is above 90°C
(194°F). Allow engine to cool
down before removing cap. The
coolant reservoir contains hot
fluid and is under pressure.
• Using a rag, turn cap to first
notch to relieve excess pressure.
If opened immediately, hot
scalding fluid and steam will be
blown out under pressure,
possibly causing personal injury,
• Do not spill antifreeze on hot
engine parts. Antifreeze contains
ethylene glycol which may burn if
it comes into contact with hot
engine parts. You can be
seriously burned.
Adding Coolant
If coolant has to be added, a 50/50
mixture of water and MB
anticorrosion/antifreeze should be
added.
SL 320:
The drain plugs for the cooling
system are located on the right side
of the engine block and at the bottom
of the radiator.
SL 500, SL 600:
The drain plugs for the cooling
system are located on the right and
left sides of the engine block and at
the bottom of the radiator.
Anticorrosion/antifreeze, see
Coolants in Index.
105
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