Volkswagen Workshop Service and Repair Manuals

Draining and filling coolant Special tools and workshop equipment required

t  Drip tray -V.A.G 1306-

t  Hose clip pliers -V.A.G 1921- t  Refractometer Not illustrated: t  Cooling system charge unit -VAS 6096- Draining –  Remove engine cover. –  Open filler cap on coolant expansion tank. –  Remove centre noise insulation: → Rep. Gr.50

–  To drain coolant from radiator, open drain plug -arrow-.

–  To drain coolant from engine, also remove coolant hose from engine oil cooler -arrow-.   Note Observe environmental regulations for disposal. Filling   Note t  Use only coolant additive G 12 in accordance with TL coolant additive -VW 774 F-. Identification: purple colour. t  G 12 purple (conforming to TL coolant additive -VW 774 F-) can be mixed with the previous coolant additive G 12 red! t  G 12 and coolant additives marked "In accordance with TL coolant additive -VW 774 F- F" prevent frost and corrosion damage and scaling and also raise boiling point of coolant. Therefore, the cooling 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 coolant additive concentration must be at least 40 %. 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:

Frost protection to	Anti-freeze quantity	G 12 → Note	Water → Note
-25 °C	40 %	2.4 l	3.6 l
-35 °C	50 %	3.0 l	3.0 l

1)  The quantity of coolant can vary depending upon vehicle equipment. –  Close coolant drain plug. With cooling system charge unit -VAS 6096-: –  Fill coolant circuit using cooling system charge unit -VAS 6096- → Operating instructions for cooling system charge unit VAS 6096. Without cooling system charge unit -VAS 6096-:

–  Fill with coolant up to max. mark on expansion tank. –  Fit expansion tank cap. –  Run engine until radiator fan cuts-in. –  Check coolant level and top-up if necessary. When the engine is at normal operating temperature, the coolant level must be at the max. mark; when the engine is cold, between the min. and max. marks.