INSPECTION
INSPECTION
47
47
Topping up the coolant
Important
O
Never
open
the
engine
compartment cover when you
can
see
steam
or
coolant
escaping
from
the
engine
compartment
-
danger
of
scalding! Wait until steam or
coolant no longer escapes.
O
Do
not
open
the
cooling
system cap while the engine is
hot
-
danger
of
scalding:
Remember
that
the
cooling
system is under pressure!
O
Observe the safety precautions
beginning on page
17 before
performing out any work on the
engine
or
in
the
engine
compartment.
Only use fresh coolant for topping
up purposes!
First switch off the engine and allow it to cool
down. Then cover the cap with a cloth and
carefully unscrew the cap to the left.
If no G 12 A8D or an additive with the spec-
ification TL-VW 774 D (see container label)
is available, no other coolant additive should
ever be used. In such cases, top up with
water only and add the approved coolant
additive at the earliest opportunity to
restore the coolant to the prescribed mix-
ture ratio (see Page 45).
To avoid engine damage you should
refrain from adding large amounts
of coolant with the engine hot - wait
until it has cooled (thermal shock).
Never fill the coolant to beyond
the MAX mark:
Excess
coolant
would
be
discharged
through the system cap pressure release
mechanism as soon as the engine warmed
to its normal temperature!
Always make sure that the cap is
screwed on tightly.
Important note
Please observe the following when
adding:
Never mix G12 with other coolant
additives (not even with G11).
You can recognise the G12 from its
red colour. If the liquid in the expan-
sion tank is brown, G12 has been
mixed with another coolant!
In this case, the entire coolant must
be changed immediately!
Otherwise serious malfunctions of
engine damage may occur!
