Coolant, Draining And Filling: Filling
Special tools and workshop equipment required
- Refractometer T10007
- Drip Tray for VAS 6100 VAS 6208
- Hose Clip Pliers VAS 6340
- Cooling System Charge Unit VAS 6096
- Adapter V.A.G 1274/8
Only use the coolant additives approved by TL VW 774 G.
Use distilled water only.
The coolant additive prevents freezing and corrosion damage and scaling and it increases the boiling point. For this reason the system must be filled all year round with frost and corrosion protection additives.
Because of its high boiling point, the coolant contributes to engine reliability under heavy loads, particularly in countries with tropical climates.
Protection against frost must be assured to about -25°C (-13°F) (in arctic climatic countries to about -35°C (-31°F)).
The coolant concentration must not be reduced by adding water even in warmer seasons and in warmer countries. The coolant additive portion must be at least 40%.
If for climatic reasons a greater frost protection is required, the amount of coolant additives can be increased, but only up to 60% (frost protection to about -40°C (-40°F)), as otherwise frost protection is reduced again and cooling effectiveness is also reduced.
Do not use the old coolant again if replacing the radiator, heater core, cylinder head or cylinder head gasket.
Recommended mixture ratios
| Frost protection to | Freeze protection portion | Coolant additive 1 | Distilled water 1 |
|---|---|---|---|
| -25°C (-13°F) -35°C (-31°F) | 40% 50% | 2.25 l 2.8 l | 3.35 l 2.8 l |
-- Install lower coolant hose and secure with retaining clamp -arrow-.
-- Install coolant hose on the radiator for the air charge coolant circuit and secure it with the clips -arrow-.
-- Connect the coolant hoses to the engine oil cooler and the Engine Coolant Circulation Pump 2 -V178-.
-- Install the noise insulation. Refer to Description and Operation .
With cooling system charge unit VAS 6096
-- Install the adapter for the reservoir V.A.G 1274/8 on the reservoir.
-- Fill the coolant circuit. Use the Cooling System Filler Unit VAS 6096. Refer to Operating Instructions.
Without Coolant System Filler Unit VAS 6096
-- Slowly add coolant until it reaches the upper marking on the reservoir.
-- Close the reservoir.
-- Start engine and maintain an engine speed of approximately 2, 000 RPM for approximately three minutes.
-- Let the engine run at idle until the coolant fan switches on.
-- Check coolant level and fill if necessary. When engine is warm, coolant level must be at top marking and when the engine is cold, it must be in the middle of the hatched field.