Chevrolet Low Cab Forward 6.7L Diesel Engine 6500XD (GMNA-Localizing-
U.S.-15749874) - 2022 - CRC - 12/2/21
Vehicle Care
201
See
.
See
.
Engine Coolant
Protection of Engine Against Overcooling
Overcooling of the engine not only
accelerates wear of the vital engine parts
but also hurts fuel economy.
Engine Coolant in Cold Weather
To prevent the engine damage due to
freezing of the engine coolant, mix the
coolant and water at the ratio of 50/50.
Replace rubber hoses whenever they crack
or are damaged; even minor cracks allow
engine coolant solution to leak.
{
Warning
If your engine cooling system overheats,
see
. 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 proper engine coolant
to prevent damage to engine cooling system
components. The engine cooling system is
designed to use engine coolant rather than
plain water. See
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.
(Continued)
Warning (Continued)
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.
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.
(Continued)