Polo 2018 ➤, Polo 2022 ➤, Taigo 2022 ➤
Maintenance - Edition 10.2021
4.28
Cooling system: checking frost protec‐
tion and coolant level
Note
♦ Due to the differing constitution of tap water in the various
countries and regions, distilled water must be used for mix‐
ing with coolant concentrate.
♦ Only use coolant additives approved for the vehicle ⇒ 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.
♦ Mixed in the proper proportions, coolant inhibits frost and
corrosion damage as well as scaling. Additives also raise the
boiling point of the coolant. Therefore, the cooling system
must be filled all year round with a coolant additive.
♦ Because of its high boiling point, the coolant improves en‐
gine reliability under heavy loads, particularly in countries
with tropical climates.
♦ The refractometer -T10007A- or refractometer -T10007B-
must be used to determine the current anti-freeze value.
♦ Scale -1- of the refractometer is calibrated for the coolant
additives G12++ and G12evo.
♦ Scale -2- of the refractometer is calibrated for the coolant
additive G13.
♦ If it is not possible to ensure that the same type of coolant
additive is filled: always determine anti-freeze protection us‐
ing the scale for G13.
♦ Frost protection must be guaranteed down to -25°C as a
minimum and, in countries with arctic conditions, down to
approx. -36°C. Increasing the frost protection is permissible
only if climatic conditions require stronger frost protection. It
may, however, be increased only to a maximum of -48°C.
Otherwise, the cooling effect will be impaired.
♦ The coolant concentration must not be reduced by adding
water even in warmer seasons and in warmer countries.
Frost protection must be guaranteed down to at least -25°C.
4. Descriptions of work
95
English 