Buick 2006 LaCrosse - Manual (Page 318)

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,
if only DEX-COOL
® extended life coolant is added.
The following explains the cooling system and how
to add coolant when it is low. If there is a problem with
engine overheating or if coolant needs to be added
to the radiator, see Engine Overheating on page 5-27.
A 50/50 mixture of clean, drinkable water and
DEX-COOL
® engine 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.
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 25,000 miles (41 500 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
® engine coolant which will not
damage aluminum parts. If this coolant mixture is used,
nothing else needs to be added.
5-24