Engine Coolant; What To Use - Buick Enclave 2008 Owner's Manual

Engine Coolant

The cooling system in your vehicle is filled with
®
DEX-COOL engine coolant. This coolant is designed
to remain in your vehicle for five years or 150,000 miles
(240 000 km), whichever occurs first, if you add only
®
DEX-COOL extended life coolant.
The following explains your cooling system and how to
add coolant when it is low. If you have a problem
with engine overheating or if you need to add coolant to
the radiator, see Engine Overheating on page 5-23.
A 50/50 mixture of clean, drinkable water and
®
DEX-COOL coolant will:
Give freezing protection down to −34°F (−37°C).
•
•
Give boiling protection up to 265°F (129°C).
•
Protect against rust and corrosion.
•
Help keep the proper engine temperature.
•
Let the warning lights and gages work as they
should.
5-20
Notice: Using coolant other than DEX-COOL
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.
®
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