Chevrolet Sonic 2014 Owner's Manual page 163

Caution
The engine needs clean air to
operate properly.
Do not operate your vehicle
without the air cleaner element
installed.
Driving without the air cleaner
element properly installed can
damage your engine.
Engine coolant
In countries with moderate climate
the coolant provides freeze protection
down to approx. -30 °C.
In countries with extremely cold
climate the coolant provides freeze
protection down to approx. -40 °C.
Maintain a sufficient concentration of
anti-freeze.
Caution
Only use approved anti-freeze.
Coolant level
Caution
Too low a coolant level can cause
engine damage.
If the cooling system is cold, the
coolant level should be above the
filling line mark. Top up if the level is
low.
Vehicle care
9 Warning
Never remove the coolant
reservoir cap when the engine and
radiator are hot. It could cause
serious injury. The engine must be
cool before opening the cap.
Carefully open the cap, relieving
the pressure slowly.
Fill up with a mixture of demineralised
water and anti-freeze approved for
the vehicle. Install the cap tightly.
Have the anti-freeze concentration
checked and have the cause of the
coolant loss remedied by a workshop.
Note
If the coolant level falls below the line
mark, refill the radiator with 56/44
(Water: 56%) mix of de-mineralized
water and organic acid anti-freeze.
In order to protect your vehicle in
extremely cold weather, use mix of
48 percent water and 52 percent
anti-freeze.
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