Black plate (22,1)
DURAMAX Diesel Engine (LML/LGH) - 2011
10-22
Vehicle Care
What to Use
Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
coolant which will not damage
aluminum parts. If using this
mixture, nothing else needs to be
added.
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WARNING
Adding only plain water or some
other liquid to the cooling system
can be dangerous. Plain water
and other liquids, can boil before
the proper coolant mixture will.
The vehicle's coolant warning
system is set for the proper
coolant mixture. With plain water
or the wrong mixture, the engine
could get too hot but you would
not get the overheat warning. The
engine could catch fire and you
or others could be burned. Use a
50/50 mixture of clean, drinkable
water and DEX-COOL coolant.
Notice:
If an improper coolant
mixture is used, the engine could
overheat and be badly damaged.
The repair cost would not be
covered by the vehicle warranty.
Too much water in the mixture
can freeze and crack the engine,
radiator, heater core, and other
parts.
If coolant has to be added more
than four times a year, have the
dealer check the vehicle cooling
system.
Notice:
If you use extra inhibitors
and/or additives in your vehicle's
cooling system, you could
damage your vehicle. Use only
the proper mixture of the engine
coolant listed in this manual
for the cooling system. See
Recommended Fluids and
Lubricants on page 11
‑
8
for more
information.
Never dispose of engine coolant
by putting it in the trash, pouring
it on the ground, or into sewers,
streams, or bodies of water.
Have the coolant changed by an
authorized service center, familiar
with legal requirements regarding
used coolant disposal. This will help
protect the environment and your
health.
Checking Coolant (Pickup Models)
The coolant surge tank is located
in the engine compartment on the
passenger side of the vehicle. See
Engine Compartment Overview on
page 10
‑
4
for more information on
its location.
