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Buick Lucerne 2007 - Engine Coolant

Buick Lucerne 2007
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How to Check Automatic Transaxle
Fluid (4.6L Engine)
For the 4.6L V8 engine, it is not necessary to
check the transaxle fluid level. A transaxle fluid
leak is the only reason for fluid loss. If a leak
occurs, take your vehicle to the dealership service
department and have it repaired as soon as
possible.
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, see Engine
Overheating on page 351.
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.
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.
347

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