Chevrolet Low Cab Forward 6.7L Diesel Engine 6500XD (GMNA-Localizing-
U.S.-15749874) - 2022 - CRC - 12/2/21
202
Vehicle Care
Warning (Continued)
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
engine of the vehicle is at
−
30 °C (
−
22 °F) or
above, the coolant concentration should be
50%. Direct use of
“
50/50 Pre-diluted
”
product which is already diluted to 50%
concentration is recommended. If the engine
or vehicle is used at
−
30 °C (
−
22 °F) or
below, coolant concentration of 50% is
recommended.
Use only the recommended coolant. See
Recommended Fluids and Lubricants
It is the owner
’
s responsibility to:
.
If the engine or vehicle is used at -32 °C
(-25 °F) or below, see the Cummins
Owner's Manual for more information.
.
Maintain the engine cooling system
freeze protection to ensure protection
against corrosion and loss of engine
coolant from boiling. Periodic replacement
of engine coolant is needed to replenish
the anticorrosion additives that wear out
with use. Engine coolant that has become
dark in color shows that it needs to be
changed.
.
Do not use methanol-base antifreeze,
alcohol or plain water alone in your
vehicle at any time. They will boil at a
lower point than that at which the engine
coolant temperature gauge will warn of
overheating, and they do not provide
proper protection against corrosion.
Engine Coolant Quantity
For the quantity of engine coolant, see
. After
changing the engine coolant, check that the
engine coolant is up to the specified level.
{
Warning
For storage, close the cap of coolant
container securely and keep it in a place
inaccessible to children.
You and others could be seriously injured.
Using any coolant other than recommended
above and in the Cummins Owner's Manual
could cause damage to the engine, radiator
or heater core. In particular, use of coolants
containing borate salts or silicates may
result in engine or radiator corrosion,
causing engine coolant leaks and other
problems.
To dilute the coolant, use distilled water or
deionized water.
Do not use the coolant at any coolant
concentration other than that specified.
If the coolant concentration is 60% or
higher, overheating is likely to occur, while
if it is 40% or lower, anti-corrosion function
is not provided sufficiently.
Using coolant at any coolant concentration
other than that specified may reduce
anti-freezing performance, and engine
coolant may freeze.
