Skoda Octavia II 2004 Maintenance Manual page 69

The scale -1- of the refractometer - T10007 A- is valid for the
coolant additives G11, G12; G12+ and G12++.
The scale -2- of the refractometer - T10007 A- is valid for the
coolant additives G13.
– Clean the measuring glass of the refractometer after inspect‐
ing the antifreeze.
Antifreeze protection of the coolant
WARNING
Antifreeze protection of the coolant must be ensured down to
-25 °C.
In countries with an arctic climate, the antifreeze protection of
the coolant must be guaranteed to -35 °C.
If a greater antifreeze concentration is required for climatic
reasons, the concentration may be increased up to 60% (i.e.
antifreeze protection down to approx -40°C). Any further in‐
crease in concentration increase would reduce the antifreeze
protection and impair cooling efficiency.
Coolant mixture ratio
Antifreeze protection down to Coolant additive Distilled water
-25 °C
-35 °C
-40 °C
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Replenishing coolant additive
unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability
Note
The cooling system is filled all year round with a mixture of distilled
water and coolant additive with anti-corrosion agent. Coolant ad‐
ditives prevent damage from frost and corrosion and the accu‐
mulation of lime scale while also raising the boiling point of the
coolant. For this reason, it is imperative that the cooling system
remains filled with coolant additive with corrosion protection which
has these properties the whole year round.
All coolant additives, approved by ŠKODA AUTO a.s., prevent
frost and corrosion damage as well as the formation of scale and
also increase the boiling point.
For these reasons you must use coolant additives all year round.
The higher boiling temperature of the coolant contributes to the
engine's reliability when the engine is stressed, especially in
countries with a tropical climate.
Other coolant additives may specifically impair the provided cor‐
rosion protection.
The resulting corrosion damage may lead to a loss of coolant and
subsequently cause major engine damage.
approx. 40 %
approx. 50 %
approx. 60%
with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�
Octavia II 2004 ➤ , Octavia II 2010 ➤
Maintenance - Edition 01.2018
approx. 60%
approx. 50 %
approx. 40 %
65