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184
Checking and refilling levels
Caution
•
Other additives may give considerably inferior corrosion protection. The
resulting corrosion in the cooling system can lead to a loss of coolant,
causing serious damage to the engine.
•
If additive G12++ is not available, this can be mixed with G12+, bearing in
mind that the protection against corrosion will be reduced.
Checking the coolant level and topping up
The correct coolant level is important for fault-free func-
tioning of the engine cooling system.
Before opening the bonnet, read and observe the warnings ⇒
"Safety instructions on working in the engine compartment" on
page 176.
Opening the coolant expansion tank
– Switch off the engine and allow it to cool.
– To prevent scalding, cover the cap on the expansion tank with a
thick cloth and carefully unscrew the cap ⇒
Checking coolant level
– Look into the open coolant expansion tank and read off the
coolant level.
– If the level is underneath the "MIN" mark, top up with coolant.
Topping up coolant
– Only use new coolant liquid.
– Do not fill above the "MAX" mark.
Closing the coolant expansion tank
– Screw the cap on again tightly.
The position of the coolant expansion reservoir is shown in the corresponding
engine compartment illustration ⇒ page 230.
Ensure the coolant conforms to the required specifications. Do not use a
different type of additive if coolant additive G12++ is not available. In this
Fig. 116 In the engine
case use only water and bring the coolant concentration back up to the
compartment: Coolant
correct level as soon as possible by putting in the specified additive.
expansion tank cap
Always top up with new coolant.
in
Do not fill above the "MAX" mark. Otherwise the excess coolant will be forced
out of the cooling system when the engine is hot.
The additive G12++ can be mixed with the G12+ in any proportion.
.
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