Page 321 of 462

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.
Page 322 of 462

Black plate (10,1)Buick LaCrosse Owner Manual - 2011
10-10 Vehicle Care
Checking Engine Oil
It is a good idea to check the
engine oil level at each fuel fill.
In order to get an accurate
reading, the vehicle must be
on level ground. The engine oil
dipstick handle is a yellow loop.
SeeEngine Compartment Overview
on page 10‑6 for the location of
the engine oil dipstick.
Obtaining an accurate oil level
reading is essential:
1. If the engine has been running recently, turn off the engine and
allow several minutes for the oil
to drain back into the oil pan.
Checking the oil level too soon
after engine shutoff will not
provide an accurate oil level
reading.
2. Pull out the dipstick and clean it with a paper towel or cloth,
then push it back in all the way.
Remove it again, keeping the tip
down, and check the level.
When to Add Engine Oil
If the oil is below the cross-hatched
area at the tip of the dipstick, add
1 L (1 qt) of the recommended
oil and then recheck the level.
See “Selecting the Right
Engine Oil” in this section for an
explanation of what kind of oil to
use. For engine oil crankcase
capacity, see Capacities and
Specifications on page 12‑2. Notice:
Do not add too much
oil. Oil levels above or below
the acceptable operating range
shown on the dipstick are harmful
to the engine. If you find that
you have an oil level above the
operating range, i.e., the engine
has so much oil that the oil level
gets above the cross-hatched
area that shows the proper
operating range, the engine
could be damaged. You should
drain out the excess oil or limit
driving of the vehicle and seek a
service professional to remove
the excess amount of oil.
See Engine Compartment Overview
on page 10‑6 for the location of the
engine oil fill cap.
Add enough oil to put the level
somewhere in the proper operating
range. Push the dipstick all the way
back in when through.
Page 327 of 462

Black plate (15,1)Buick LaCrosse Owner Manual - 2011
Vehicle Care 10-15
Automatic Transmission
Fluid
How to Check Automatic
Transmission Fluid
It is not necessary to check
the transmission fluid level.
A transmission fluid leak is the
only reason for fluid loss. If a leak
occurs, take the vehicle to your
dealer service department and
have it repaired as soon as
possible.
There is a special procedure
for checking and changing the
transmission fluid. Because
this procedure is difficult, you
should have this done at your
dealer service department.Contact your dealer for additional
information or the procedure can
be found in the service manual.
To purchase a service manual,
see
Service Publications Ordering
Information on page 13‑15.
Change the fluid and filter at
the intervals listed in Scheduled
Maintenance on page 11‑2, and
be sure to use the fluid listed
in Recommended Fluids and
Lubricants on page 11‑7.
Engine Air Cleaner/Filter
The engine air cleaner/filter is
located in the engine compartment
on the driver side of the vehicle.
See Engine Compartment Overview
on page 10‑6 for more information
on location.
When to Inspect the Engine Air
Cleaner/Filter
Inspect the air cleaner/filter at
the scheduled maintenance
intervals and replace it at the first
oil change after each 80 000 km
(50,000 mi) interval. See Scheduled
Maintenance on page 11‑2 for more
information. If you are driving in
dusty/dirty conditions, inspect the
filter at each engine oil change.
How to Inspect the Engine Air
Cleaner/Filter
To inspect the air cleaner/filter,
remove the filter from the vehicle
and lightly shake the filter to release
loose dust and dirt. If the filter
remains covered with dirt, a new
filter is required.
Page 331 of 462

Black plate (19,1)Buick LaCrosse Owner Manual - 2011
Vehicle Care 10-19
Notice:If an improper coolant
mixture is used, the engine could
overheat and be badly damaged.
The repair cost would not be
covered by the vehicle warranty.
Too much water in the mixture
can freeze and crack the engine,
radiator, heater core, and other
parts.
Never dispose of engine coolant
by putting it in the trash, pouring
it on the ground, or into sewers,
streams, or bodies of water.
Have the coolant changed by an
authorized service center, familiar
with legal requirements regarding
used coolant disposal. This will
help protect the environment
and your health.Checking Coolant
The vehicle must be on a level
surface when checking the coolant
level.
Check to see if coolant is visible
in the coolant surge tank. If the
coolant inside the coolant surge
tank is boiling, do not do anything
else until it cools down. If coolant is
visible but the coolant level is not at
or above the mark pointed to, add
a 50/50 mixture of clean, drinkable
water and DEX-COOL coolant at the
coolant surge tank, but be sure the
cooling system is cool before this
is done. If no coolant is visible in the coolant
surge tank, add coolant as follows:
How to Add Coolant to the
Coolant Surge Tank
{WARNING
You can be burned if you spill
coolant on hot engine parts.
Coolant contains ethylene glycol
and it will burn if the engine parts
are hot enough. Do not spill
coolant on a hot engine.
Notice: This vehicle has a
specific coolant fill procedure.
Failure to follow this procedure
could cause the engine to
overheat and be severely
damaged.