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Note
♦
The water used in the coolant mixture has a great influence
on its effectiveness. Because the water quality differs from
country to country and even region to region, the quality of the
water to be used has been defined. Distilled water fulfils all
requirements. For this reason, we recommend using distilled
water when mixing coolant for topping up or replacing coolant.
♦
Use only coolant additives which conform with the ⇒ Elec‐
tronic Parts Catalogue (ETKA) . Other coolant additives may
reduce corrosion protection substantially. The resulting dam‐
age could lead to loss of coolant and subsequent severe
damage to the engine.
♦
The correct coolant solution ratio helps prevent damage due
to freezing and corrosion as well as scaling. Moreover, the
boiling temperature is raised. Therefore, the cooling system
must be filled all year round with coolant additive.
♦
Because of its higher boiling point, the coolant improves en‐
gine reliability under heavy loads, particularly in countries with
tropical climates.
♦
ONLY refractometer - T10007A- may be used for determining
current anti-freeze value.
♦
The normal frost protection must be for -25°C, in countries with
arctic conditions to -36°C. When climatic conditions require a
stronger frost protection, only then may the frost protection be
increased. But only to -48°C. Otherwise, the cooling effect of
the coolant will be impaired.
♦
The coolant concentration must not be reduced by adding wa‐
ter even in warmer seasons and in warmer countries. The frost
protection must be at least -25°C.
♦
Read off anti-freeze figures for respective replenished anti-
freeze.
♦
The temperature read off the refractometer - T10007A- equa‐
tes to the »ice flocculation point«. Ice crystals can start forming
in the coolant below this temperature.
♦
Do not reuse old coolant.
♦
Use only a water/anti-freeze mixture as a slip agent for coolant
hoses.
Recommended mixture ratios:
Note
The quantity of coolant can vary depending upon vehicle equip‐
ment.
Frost protection
to
Anti-freeze
quantity
Coolant ad‐
ditive
Distilled wa‐
ter
-25 °C
-36 °C
40 %
50 %
4.0 l
4.5 l
5.0 l
4.5 l
Procedure
– Install coolant hoses and secure.
– Screw adapter - V.A.G 1274/7- onto expansion tank.
Phaeton 2003 ➤
6-cylinder injection engine - Edition 02.2014
1. Parts of cooling system
117