What To Use - Chevrolet 2008 Silverado 1500 Pickup Owner's Manual

What to Use

Use a mixture of one-half clean, drinkable water and
®
one-half DEX-COOL coolant which will not damage
aluminum parts. If you use this coolant mixture, you do
not need to add anything else.
CAUTION:
{
Adding only plain water to your cooling system
can be dangerous. Plain water, or some other
liquid such as alcohol, can boil before the
proper coolant mixture will. Your vehicle's
coolant warning system is set for the proper
coolant mixture. With plain water or the wrong
mixture, your engine could get too hot but you
would not get the overheat warning. Your
engine could catch fire and you or others could
be burned. Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
5-30
®
coolant.
Notice: If you use an improper coolant mixture,
your engine could overheat and be badly damaged.
The repair cost would not be covered by your
warranty. Too much water in the mixture can freeze
and crack the engine, radiator, heater core, and
other parts.
If you have to add coolant more than four times a year,
have your dealer/retailer check your 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 6-14 for more information.