Audi AMB Service Manual page 202

ENGINE 1.8 Liter 4-Cyl. 5V Turbo Engine Mechanical, Engine Code(s): AMB
Fig. 271: Disconnecting Coolant Hose From Oil Cooler And Drain Off Remaining Coolant
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Disconnect coolant hose from oil cooler - arrow - and drain off remaining coolant.

NOTE:
Observe disposal regulations.
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Filling
NOTE:
Only use coolant additive G 12 meeting specification TL VW 774 D.

Identifiable by color: red
CAUTION: The two coolant additives G 011 A8 C and G 012 A8 D should never be
mixed as this will result in serious engine damage.
Never mix G 12 with other coolant additives.

If fluid in expansion tank is brown, G 012 A8 D has been mixed with a different type of coolant. In this

case, flush out cooling system and replace coolant. To flush out, fill cooling system with clean water and
allow engine to run for approx. 2 minutes. This should remove virtually all the old coolant.
G 011 A8 C or G 012 A8 D and coolant additives marked "meeting TL VW 774 C" or "meeting TL VW

774 D" prevent frost and corrosion damage and stop scale forming. They also raise the boiling point. The
cooling system must therefore be filled all year round with the correct anti-freeze and anti-corrosion
additive.
On account of the higher boiling point, the coolant helps to enhance engine reliability under heavy loads

particularly in countries with tropical climates.
Frost protection must be guaranteed to around -25 °C (in countries with arctic climate to around -35 °C).
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The coolant concentration must not be reduced by adding water even in warmer seasons and in warmer

countries. The anti-freeze ratio must be at least 40%.
If greater frost protection is required in very cold climates, the amount of G 012 A8 D can be increased,

however only up to 60 % (giving frost protection to around -40 °C) as otherwise frost protection
decreases again and cooling efficiency is also impaired.
2005 Audi A4 Quattro
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