Engine Coolant - Chevrolet Low Cab Forward 2023 Manual

See Vehicle Messages 0 62.
See Maintenance Schedule 0 262.

Engine Coolant

Warning
If your engine cooling system overheats,
see Engine Overheating 0 206. Continued
operation of the engine even for a short
time may result in a fire and the
possibility of personal injury and/or
severe vehicle damage.
You and others could be seriously injured.
Your vehicle has an engine coolant recovery
system, expansion bottle and/or an engine
coolant reserve tank system. Engine coolant
in the system expands with heat and
overflows into the reserve tank. When the
system cools, engine coolant is drawn back
into the radiator.
The engine cooling system has been filled at
the factory with a quality engine coolant.
It is important to use the proper
50/50 mixture high quality water and
coolant (rather than plain water) to prevent
damage to engine cooling system
components. See Recommended Fluids and
Lubricants 0 285.
See the Maintenance Schedule to find out
when the engine coolant must be replaced.
Note that changing the engine coolant is
necessary to replenish the rust inhibitors to
make certain that all parts of the engine
cooling system work well.
Warning
Check, replenish or change the engine
coolant only after the engine has
sufficiently cooled down.
Do not loosen or remove the sub tank
pressure cap or reserve tank cap when
the engine coolant is still hot. Hot vapor
or boiling water may burst out and cause
a burn.
When removing the sub tank pressure
cap or reserve tank cap, use a thick cloth
to cover the cap and turn it slowly.
Engine coolant is toxic and must not be
ingested. If the engine coolant is
mistakenly ingested, seek prompt medical
attention.
Warning (Continued)
If the engine coolant gets in your eyes,
rinse your eyes immediately with a large
amount of water for 15 minutes or
longer. Also, if your eyes are still irritated
or otherwise feel abnormal, seek
immediate medical attention.
If the engine coolant gets on your skin,
rinse it off using a soap with a large
amount of water. Also, if abnormality is
seen, seek medical attention.
Engine coolant is flammable, and
therefore, it must be kept away from
flames and other heat sources. Engine
coolant also could ignite if it comes in
contact with a hot surface, such as the
exhaust manifold. Exercise caution to
prevent this from happening.
You and others could be seriously injured.
Preparing Engine Coolant
To prevent engine damage due to freezing
of the engine coolant and to protect the
cooling system from corrosion, use the
proper 50/50 mixture high quality water
and coolant, rather than plain water. If the
(Continued)
Vehicle Care 203