Volkswagen Golf Variant / Jetta. Manual - part 407
the coolant hose at the oil cooler -arrow-.
Filling:
Caution
Only use distilled water for mixing with G12 plus plus. Using
distilled water provides optimum corrosion protection.
Note
♦
Only use coolant additive G 12 Plus Plus that conforms to TL
VW774 G.
♦
Use distilled water for mixing.
♦
G12 plus-plus prevents freeze and corrosion damage and
scaling and it increases the boiling temperature. For this rea‐
son the cooling system must be filled all year round with
coolant and corrosion protection additives.
♦
Because of its high boiling point, the coolant contributes to
engine reliability under heavy engine loads, particularly in
countries with tropical climates.
♦
Freeze protection should be guaranteed to about -25 ℃ (-13
°F) (in countries with arctic climates: to about -35 ℃ (-31 °F)).
♦
The coolant concentration must not be reduced by adding wa‐
ter even in warmer seasons and in warmer countries. The
coolant additive portion must be at least 40%.
♦
If a stronger freeze protection is required, the G12 plus-plus
ratio can be increased.
♦
But only up to 60% (freeze protection down to approximately
-40 °C (-40 °F)). Otherwise the freeze protection is lessened
and the cooling effect will be diminished.
♦
Do not use the old coolant again if replacing the radiator, heat‐
er core, cylinder head or cylinder head gasket.
♦
The Refractometer - T10007- is recommended for determining
the current freeze protection density.
Recommended Mixture Ratios:
Frost Protection
to
Freeze Protection Por‐
tion
-G 12 plus-plus- . Refer to
.
Distilled Water. Refer to
,
-25 °C (-13 °F)
40 %
3.2 liters (3.38 quarts)
4.8 liters (5.07 quarts)
-35 °C (-31 °F)
50 %
4.0 liters (4.22 quarts)
4.0 liters (4.22 quarts)
3) The coolant quantity can vary depending upon the vehicle equipment.
1. Cooling System Components
211