Cadillac 2007 DTS, Owner'S Manual

Page: 367 / 508

Notice: Using coolant other than DEX-COOL
®
may cause premature engine, heater core, or
radiator corrosion. In addition, the engine
coolant may require changing sooner, at the first
maintenance service after each 30,000 miles
(50 000 km) or 24 months, whichever occurs
first. Any repairs would not be covered by your
warranty. Always use DEX-COOL
®
(silicate-free)
coolant in your vehicle.
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.
CAUTION: (Continued)
CAUTION: (Continued)
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
®
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 two times a
year, have your dealer 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 467 for more information.
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