oil viscosity BUICK LACROSSE 2011 Owner's Manual

Black plate (9,1)Buick LaCrosse Owner Manual - 2011
Vehicle Care 10-9
A.Engine Air Cleaner/Filter on
page 10‑15.
B. Power Steering Reservoir and Cap. See Power Steering Fluid
on page 10‑23.
C. Engine Oil Fill Cap. See Engine
Oil on page 10‑9.
D. Engine Oil Dipstick. See Engine
Oil on page 10‑9.
E. Engine Cover.
F. Transmission Fluid Cap and Dipstick. See Automatic
Transmission Fluid on
page 10‑15. G. Brake Master Cylinder
Reservoir. See Brakes on
page 10‑24.
H. Coolant Surge Tank and Pressure Cap. See Engine
Coolant on page 10‑18.
I. Battery Cover. See Battery on
page 10‑27.
J. Engine Compartment Fuse
Block on page 10‑39.
K. Windshield Washer Fluid Reservoir. See Washer Fluid on
page 10‑24.Engine Oil
To ensure proper engine
performance and long life,
careful attention must be paid
to engine oil. Following these
simple, but important steps will
help protect your investment:
.Always use engine oil approved
to the proper specification and
of the proper viscosity grade.
See “Selecting the Right Engine
Oil” in this section.
.Check the engine oil level
regularly and maintain the
proper oil level. See “Checking
Engine Oil” and“When to Add
Engine Oil” in this section.
.Change the engine oil at the
appropriate time. See Engine
Oil Life System on page 10‑13.
.Always dispose of engine oil
properly. See “What to Do with
Used Oil” in this section.

Black plate (11,1)Buick LaCrosse Owner Manual - 2011
Vehicle Care 10-11
Selecting the Right Engine Oil
Selecting the right engine oil
depends on both the proper oil
specification and viscosity grade:
Specification
Use and ask for engine oils
with the dexos™certification mark.
Oils meeting the requirements of
the vehicle should have the dexos
certification mark on the container.
This certification mark indicates that
the oil has been approved to the
dexos specification.
This vehicle was filled at the factory
with dexos‐approved engine oil.
Notice: Use only engine oil
that is approved to the dexos
specification or an equivalent
engine oil of the appropriate
viscosity grade. Engine oils
approved to the dexos
specification will show the
dexos symbol on the container. Failure to use the recommended
engine oil or equivalent can
result in engine damage not
covered by the vehicle warranty.
If you are unsure whether the
oil is approved to the dexos
specification, ask your service
provider.
Use of Substitute Engine Oils if
dexos is unavailable: In the event
that dexos‐approved engine oil is
not available at an oil change or
for maintaining proper oil level,
you may use substitute engine oil
displaying the API Starburst symbol
and of SAE 5W-30 viscosity grade.

Black plate (12,1)Buick LaCrosse Owner Manual - 2011
10-12 Vehicle Care
Use of oils that do not meet the
dexos specification, however, may
result in reduced performance under
certain circumstances.
Viscosity Grade
SAE 5W-30 is the best viscosity
grade for the vehicle. Do not
use other viscosity oils such as
SAE 10W‐30, 10W‐40, or 20W-50.Cold Temperature Operation:
In an area of extreme cold,
where the temperature falls
below−29°C (−20°F), an
SAE 0W-30 oil should be used.
An oil of this viscosity grade
will provide easier cold starting
for the engine at extremely low
temperatures. When selecting an oil
of the appropriate viscosity grade,
be sure to always select an oil that
meets the required specification,
dexos. See “Specification” earlier in
this section for more information.

Black plate (7,1)Buick LaCrosse Owner Manual - 2011
Service and Maintenance 11-7
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
UsageFluid/Lubricant
Engine Oil The engine requires engine oil approved to the dexos specification.
Oils meeting this specification can be identified with the dexos certification
mark. Look for and use only an engine oil that displays the dexos
certification mark of the proper viscosity grade. See
Engine Oil on
page 10‑9.
Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL Coolant.
See
Engine Coolant on page 10‑18.
Hydraulic Brake System DOT 3 Hydraulic Brake Fluid (GM Part No. 88862806,
in Canada 88862807).
Windshield Washer Optikleen
®Washer Solvent.
Hydraulic Power Steering System DEXRON
®-VI Automatic Transmission Fluid.
Automatic Transmission DEXRON
®-VI Automatic Transmission Fluid.