CHEVROLET 2010 Silverado - Manual (Page 475)

Notice: Using coolant other than DEX-COOL ® can
cause premature engine, heater core, or radiator
corrosion. In addition, the engine coolant could
require changing sooner, at 50 000 km (30,000 miles)
or 24 months, whichever occurs first. Any repairs
would not be covered by the vehicle warranty.
Always use DEX-COOL
® (silicate-free) coolant in the
vehicle.
Engine Coolant
The cooling system in the vehicle is filled with
DEX-COOL
® engine coolant. This coolant is designed
to remain in the vehicle for five years or 150,000 miles
(240 000 km), whichever occurs first.
The following explains the cooling system and how
to check and add coolant when it is low. If there is a
problem with engine overheating, see Engine
Overheating on page 6‑34.
What to Use
{ WARNING:
Adding only plain water to the cooling system can
be dangerous. Plain water, or some other liquid
such as alcohol, 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.
Use a 50/50 mixture of clean, drinkable water and
DEX-COOL
® coolant. If using this mixture, nothing else
needs to be added. This mixture:
. Gives freezing protection down to −34°F (−37°C),
outside temperature.
. Gives boiling protection up to 265°F (129°C),
engine temperature.
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