![background image](/i/infiniti/150541/infiniti-m45-2010/h/infiniti-m45-2010-375.png)
The engine cooling system is filled at the factory
with a high-quality, year-round, anti-freeze
coolant solution. The antifreeze solution con-
tains rust and corrosion inhibitors, therefore
additional cooling system additives are not
necessary.
WARNING
●
Never remove the radiator or coolant reser-
voir cap when the engine is hot. Wait until
the engine and radiator cool down. Serious
burns could be caused by high pressure fluid
escaping from the radiator. See precautions
in “IF YOUR VEHICLE OVERHEATS” in the “6.
In case of emergency” section of this
manual.
●
The radiator is equipped with a pressure
type radiator cap. To prevent engine dam-
age, use only a genuine NISSAN radiator cap.
CAUTION
When adding or replacing coolant, be sure to
use only a Genuine NISSAN Long Life
Antifreeze/Coolant (green) or equivalent with
the proper mixture ratio of 50% antifreeze and
50% demineralized or distilled water. The use
of other types of coolant solutions may damage
the engine cooling system.
Outside
temperature
down to
Anti-freeze
Demineral-
ized water
or distilled
water
°F
°C
2
30
2
35
50%
50%
VK45DE engine
SDI1818B
VQ35HR engine
SDI2309
ENGINE COOLING SYSTEM
8-10
Maintenance and do-it-yourself
w
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05/19/09—tbrooks
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