Engine Cooling System - Audi R8 2009 Owner's Manual

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- Carefully top off with the appropriate oil => page 258.
- Check the oil level again=> page 198.
- Top off the oil again, if necessary.
- Screw the cap back on the filling hole and slide the oil
dipstick in as far as it will go.
&
WARNING
While topping off, the oil must not come in contact with hot
engine parts· fire hazard!
The oil filler cap must be properly secured to prevent oil from
being sprayed on the hot engine and exhaust system when the
engine is running· fire hazard!
If your skin has come in contact with the engine oil, you must
subsequently cleanse it thoroughly.
0
Note
The oil level must not be above range @ - danger of converter or
engine damage! Contact an authorized Audi dealer to draw off oil, if
necessary.
Audi does not recommend the use of oil additives . They may
damage the engine and adversely affect your New Vehicle Warranty.
<i>
For the sake of the environment
Under no circumstances can the oil come in contact with the
sewage network or the soil.
Observe and follow legal regulations when disposing of empty
oil containers . •
Engine
cooling
system
Coolant
The coolant provides cooling for the engine. The
percentage of the coolant additive determines the freeze
protection of the coolant in the winter.
The cooling system has been filled at the factory with a permanent
coolant which does not need to be changed. The coolant consists of
a mixture of water and the manufacturer's glycol-based coolant
additive G12++ antifreeze with anticorrosion additives (50% for USA
models; 60% for Canadian models) .
Coolant
additive
The percentage of the coolant additive depends on the climatic
conditions in which the vehicle is operated. If the percentage of
freeze protection in the coolant is too low, the coolant can freeze,
leading to a failure of the cooling and heating circuit.
The percentage of coolant additive has already been adjusted at the
factory for the vehicle's climatic conditions.
The mix ratio for USA models is 50% water and 50% coolant additive,
for Canadian models 40% water and 60% coolant additive. This
mixture both assures the necessary frost protection
(- 31 °F/- 35 °C
for USA models, - 40 °F/- 40 °C for Canada models) and protects
metal components in the engine's cooling system from corrosion
and scaling . It also raises the boiling point of the coolant .
Summer
time
Do not reduce the concentration
of the coolant in the summer by
adding plain water. The proportion of coolant additive must be at
least 50% but not more than 60% to maintain antifreeze protection
and cooling efficiency.
~
Vehicle care

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