engine coolant AUDI A4 2000 B5 / 1.G Engine Oil Level Checking Workshop Manual

14

Cooling system antifreeze protection
and coolant level, checking


CAUTION!

Part numbers are for reference only. Always
check with your Parts Dept. for the latest
parts information.
Coolant antifreeze, Part No. G 11 prevents frost
and corrosion damage, lime deposits, and also
raises the boiling temperature. Cooling system
must be filled year round with antifreeze and
corrosion protection agent.
Concentration of coolant must not be reduced by
adding wa ter, even during summer or in warmer
climates. Coolant antifreeze percentage must be
at least 40%.
Because of its high boiling point, coolant
contributes to safe operation at high engine load,
especially in warmer climates.

- Check concentration of coolant antifreeze.

Antifreeze protection must be approximately
-25 C (-13 F) for US and -35 C (-31 F)
for Canada.

For antifreeze protection down to
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16

Delivery inspection:
At delivery inspection coolant level must be at
max. mark on expansion tank (engine cold).

Inspection service:
Coolant level between min. and max. markings.
With engine cold, coolant level must be between
min. and max. markings of reservoir; with engine
warm, level may be slightly above max. marking.
If coolant level is too low but antifreeze protection
is adequate, add required amount of mixture.
If coolant level is too low but antifreeze protection
adequate, add missing quantity according to
following mixing ratios:

Antifreeze
protection down to Coolant
additive Water
-25 C (-13 F)
approx. 40 % approx. 60
%
-35 C (-31 F) approx. 50 % approx. 50
%
-40 C (-40 F) approx. 50 % approx. 50
%
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31

All models

- Start engine and check belt running.

- Check again to ensure that bolts for coolant
pump pulley are tightened to correct torque.
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