2008 BUICK LUCERNE checking oil

Service............................................................5-3
Accessories and Modications..........................5-3
California Proposition 65 Warning.....................5-4
California Perchlorate Materials Requirements.....5-4
Doing Your Own Service Work.........................5-4
Adding Equipment to the Outside of Your
Vehicle......................................................5-5
Fuel................................................................5-5
Gasoline Octane............................................5-6
Gasoline Specications....................................5-6
California Fuel...............................................5-6
Additives.......................................................5-7
Fuels in Foreign Countries...............................5-7
Filling the Tank..............................................5-8
Filling a Portable Fuel Container.....................5-10
Checking Things Under the Hood....................5-10
Hood Release..............................................5-11
Engine Compartment Overview.......................5-12
Engine Oil...................................................5-15
Engine Oil Life System..................................5-18
Engine Air Cleaner/Filter................................5-20
Automatic Transmission Fluid.........................5-21
Engine Coolant.............................................5-24
Radiator Pressure Cap..................................5-28
Coolant Surge Tank Pressure Cap..................5-28
Engine Overheating.......................................5-28Overheated Engine Protection
Operating Mode........................................5-30
Cooling System (3.8L V6 Engine)....................5-30
Cooling System (4.6L V8 Engine)....................5-36
Power Steering Fluid.....................................5-40
Windshield Washer Fluid................................5-41
Brakes........................................................5-42
Battery........................................................5-46
Jump Starting...............................................5-48
Headlamp Aiming...........................................5-53
Bulb Replacement..........................................5-56
Halogen Bulbs..............................................5-56
Taillamps, Turn Signal, Stoplamps and
Sidemarker Lamps.....................................5-56
Taillamps and Back-Up Lamps.......................5-57
License Plate Lamp......................................5-58
Replacement Bulbs.......................................5-59
Windshield Wiper Blade Replacement..............5-59
Tires..............................................................5-60
Tire Sidewall Labeling...................................5-61
Tire Terminology and Denitions.....................5-64
Ination - Tire Pressure.................................5-67
Tire Pressure Monitor System.........................5-69
Tire Pressure Monitor Operation.....................5-70
Tire Inspection and Rotation...........................5-74
Section 5 Service and Appearance Care
5-1

Filling a Portable Fuel Container
{CAUTION:
Never ll a portable fuel container while it is in
your vehicle. Static electricity discharge from
the container can ignite the fuel vapor. You
can be badly burned and your vehicle
damaged if this occurs. To help avoid injury to
you and others:
Dispense fuel only into approved
containers.
Do not ll a container while it is inside a
vehicle, in a vehicle’s trunk, pickup bed, or
on any surface other than the ground.
Bring the ll nozzle in contact with the
inside of the ll opening before operating
the nozzle. Contact should be maintained
until the lling is complete.
Do not smoke while pumping fuel.
Do not use a cellular phone while
pumping fuel.
Checking Things Under
the Hood
{CAUTION:
An electric fan under the hood can start up
and injure you even when the engine is not
running. Keep hands, clothing, and tools away
from any underhood electric fan.
{CAUTION:
Things that burn can get on hot engine parts
and start a re. These include liquids like fuel,
oil, coolant, brake uid, windshield washer and
other uids, and plastic or rubber. You or
others could be burned. Be careful not to drop
or spill things that will burn onto a hot engine.
5-10

A. Radiator Pressure Cap. SeeRadiator Pressure Cap
on page 5-28.
B. Windshield Washer Fluid Reservoir. See “Adding
Washer Fluid” underWindshield Washer Fluid
on page 5-41.
C. Remote Positive (+) Battery Terminal. SeeJump
Starting on page 5-48.
D. Underhood Fuse Block. SeeUnderhood Fuse Block
on page 5-106.
E. Engine Coolant Recovery Tank. See Index.
F. Power Steering Fluid Reservoir (Out of View). See
Power Steering Fluid on page 5-40.
G. Electric Engine Cooling Fans. See Index.H. Engine Oil Dipstick (Out of View). See “Checking
Engine Oil” underEngine Oil on page 5-15.
I. Engine Oil Fill Cap. See “When to Add Engine Oil”
underEngine Oil on page 5-15.
J. Automatic Transmission Fluid Dipstick. See
“Checking the Fluid Level” underAutomatic
Transmission Fluid on page 5-21.
K. Brake Fluid Reservoir. See “Brake Fluid” under
Brakes on page 5-42.
L. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 5-20.
5-13

A. Underhood Fuse Block. SeeUnderhood Fuse Block
on page 5-106.
B. Remote Positive (+) Terminal. SeeJump Starting on
page 5-48.
C. Windshield Washer Fluid Reservoir. See “Adding
Washer Fluid” underWindshield Washer Fluid
on page 5-41.
D. Engine Coolant Surge Tank and Pressure Cap See
Coolant Surge Tank Pressure Cap on page 5-28
andCooling System (3.8L V6 Engine) on page 5-30
orCooling System (4.6L V8 Engine) on page 5-36.
E. Remote Negative (−) Terminal. SeeJump Starting on
page 5-48.
F. Power Steering Fluid. SeePower Steering Fluid on
page 5-40.
G. Engine Oil Fill Cap. See “When to Add Engine Oil”
underEngine Oil on page 5-15.
H. Engine Oil Dipstick. See “Checking Engine Oil”
underEngine Oil on page 5-15.
I. Brake Master Cylinder Reservoir. See “Brake Fluid”
underBrakes on page 5-42.
J. Automatic Transmission Fluid Cap and Dipstick (Out
of View). SeeAutomatic Transmission Fluid on
page 5-21.
K. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 5-20.Engine Oil
Checking Engine Oil
It is a good idea to check the engine oil every time you
get fuel. In order to get an accurate reading, the oil
must be warm and the vehicle must be on level ground.
The engine oil dipstick handle is a yellow loop. See
Engine Compartment Overview on page 5-12for
the location of the engine oil dipstick.
1. Turn off the engine and give the oil several minutes
to drain back into the oil pan. If you do not do this,
the oil dipstick might not show the actual level.
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.
5-15

(e)Make sure the safety belt reminder light and safety
belt assemblies are working properly. Look for any
other loose or damaged safety belt system parts. If you
see anything that might keep a safety belt system
from doing its job, have it repaired. Have any torn or
frayed safety belts replaced. Also see Checking
the Restraint Systems on page 1-74.
(f)Lubricate all key lock cylinders. Lubricate all hinges
and latches, including those for the hood, rear
compartment, glove box door, and console door. More
frequent lubrication may be required when exposed
to a corrosive environment. Applying silicone grease on
weatherstrips with a clean cloth will make them last
longer, seal better, and not stick or squeak.
(g)If you drive regularly under dusty conditions, the
filter may require replacement more often.
(h)Change automatic transmission fluid and filter if the
vehicle is mainly driven under one or more of these
conditions:
In heavy city traffic where the outside temperature
regularly reaches 90°F (32°C) or higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police, or delivery
service.(j)Drain, flush, and refill cooling system. This service
can be complex; you should have your dealer/retailer
perform this service. See Engine Coolant on page 5-24
for what to use. Inspect hoses. Clean radiator,
condenser, pressure cap, and filler neck. Pressure test
the cooling system and pressure cap.
(k)A fluid loss in any vehicle system could indicate a
problem. Have the system inspected and repaired
and the fluid level checked. Add fluid if needed.
(l)Visually inspect belt for fraying, excessive cracks, or
obvious damage. Replace belt if necessary.
(m)If you drive regularly under dusty conditions, inspect
the filter at each engine oil change.
Owner Checks and Services
These owner checks and services should be performed
at the intervals specied to help ensure the safety,
dependability, and emission control performance of your
vehicle. Your dealer/retailer can assist you with these
checks and services.
Be sure any necessary repairs are completed at once.
Whenever any uids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
inRecommended Fluids and Lubricants on page 6-12.
6-8