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Removing and installing radiator > < Coolant hose schematic diagram
Draining and filling coolant
   
Draining and filling coolant
Special tools and workshop equipment required
t  Refractometer -T10007-
t  Spring-type clip pliers -VAS 5024A-
t  Cooling system charge unit -VAS 6096-

Draining
  WARNING
Steam may escape when expansion tank is opened. Wear protective glasses and clothing to avoid eye injuries and scalding. Cover cap with cloth and open carefully.
–  Remove cap from coolant expansion tank.
–  Remove engine splash guard.
   
–  To drain coolant from radiator, open drain plug -arrow-.
  Note
Observe environmental regulations for disposal.
Filling
  Note
t  Only use coolant additive G 12 in accordance with TL “VW 774 F”. Identification: purple colour.
t  G 12 purple (in accordance with TL “VW 774 F”) can be mixed with the previous coolant additive G 12 red!
t  G 12 and coolant additives marked "Conforming to TL “VW 774 F”" prevent frost and corrosion damage, scaling and also raise boiling point of coolant. Therefore, the system must be filled all year round with frost and corrosion protection additives.
t  Because of its high boiling point, the coolant improves engine reliability under heavy loads, particularly in countries with tropical climates.
t  Frost protection is required down to about -25 °C (in countries with arctic climates: down to about -35 °C).
t  The coolant concentration must not be reduced by adding water even in warmer seasons and in warmer countries. The anti-freeze must be at least 40% of mixture.
t  If for climatic reasons greater frost protection is required, the amount of G 12 can be increased, but only up to 60% (frost protection to about -40°C). Otherwise frost protection and cooling effectiveness are reduced again.
t  If radiator, heat exchanger, cylinder head or cylinder head gasket is renewed, do not reuse old coolant.
Recommended mixture proportions:
  A10-0118
Frost
protection to
Anti-freeze quantityG 12 → NoteWater → Note
-25 °C
-35 °C
40 %
50 %
2.25 l
2.8 l
3.35 l
2.8 l

1)  The quantity of coolant can vary depending upon vehicle equipment.
   
–  Screw drain plug into radiator.
–  Install engine splash guard.
With cooling system charge unit -VAS 6096-
–  Fill coolant circuit using cooling system charge unit -VAS 6096-. See → operating instructions for cooling system charge unit 6096.
Without cooling system charge unit -VAS 6096-
  A10-0118
–  Fill with coolant up to max. mark on expansion tank.
With or without cooling system charge unit -VAS 6096-
–  Fit expansion tank cap.
–  Turn heater control to off position.
–  Start engine and maintain an engine speed of about 2000 rpm for about 3 minutes.
–  Run engine until radiator fan cuts-in.
  WARNING
Steam may escape when expansion tank is opened. Wear protective glasses and clothing to avoid eye injuries and scalding. Cover cap with cloth and open carefully.
–  Check coolant level and top up if necessary. When the engine is at normal operating temperature, the coolant level must be on the max. mark; when the engine is cold, between the min. and max. marks.
  N19-0347

Removing and installing radiator > < Coolant hose schematic diagram