oil additives BUICK LUCERNE 2007 Owner's Manual

Service........................................................ 325
Accessories and Modications................... 325
California Proposition 65 Warning.............. 326
Doing Your Own Service Work.................. 326
Adding Equipment to the Outside of
Your Vehicle.......................................... 327
Fuel............................................................. 327
Gasoline Octane........................................ 327
Gasoline Specications.............................. 328
California Fuel........................................... 328
Additives................................................... 328
Fuels in Foreign Countries........................ 329
Filling the Tank......................................... 330
Filling a Portable Fuel Container............... 332
Checking Things Under the Hood.............. 332
Hood Release........................................... 333
Engine Compartment Overview.................. 334
Engine Oil................................................. 337
Engine Oil Life System.............................. 340
Engine Air Cleaner/Filter............................ 342
Automatic Transaxle Fluid......................... 343
Engine Coolant.......................................... 347
Radiator Pressure Cap.............................. 351
Engine Overheating................................... 351Overheated Engine Protection
Operating Mode..................................... 353
Cooling System (3.8L V6 Engine).............. 354
Cooling System (4.6L V8 Engine).............. 360
Power Steering Fluid ................................. 364
Windshield Washer Fluid........................... 365
Brakes...................................................... 367
Battery...................................................... 370
Jump Starting............................................ 372
Headlamp Aiming........................................ 377
Bulb Replacement....................................... 380
Halogen Bulbs........................................... 380
Taillamps, Turn Signal, Stoplamps and
Sidemarker Lamps ................................. 380
Taillamps and Back-Up Lamps.................. 382
License Plate Lamp................................... 383
Replacement Bulbs................................... 383
Windshield Wiper Blade Replacement....... 383
Tires............................................................ 385
Tire Sidewall Labeling............................... 386
Tire Terminology and Denitions............... 389
Ination - Tire Pressure............................. 392
Tire Pressure Monitor System................... 393
Section 5 Service and Appearance Care
323

If you are in an area of extreme cold, where the
temperature falls below−20°F (−29°C), it is
recommended that you use either an SAE 5W-30
synthetic oil or an SAE 0W-30 oil. Both will
provide easier cold starting and better protection
for the engine at extremely low temperatures.
Engine Oil Additives
Do not add anything to the oil. The recommended
oils with the starburst symbol that meet GM
Standard GM6094M are all you will need for good
performance and engine protection.
Engine Oil Life System
When to Change Engine Oil
Your vehicle has a computer system that lets you
know when to change the engine oil and lter.
This is based on engine revolutions and engine
temperature, and not on mileage. Based on driving
conditions, the mileage at which an oil change
will be indicated can vary considerably. For the oil
life system to work properly, you must reset the
system every time the oil is changed.When the system has calculated that oil life has
been diminished, it will indicate that an oil change
is necessary. A CHANGE ENGINE OIL SOON
message will come on. SeeDIC Warnings
and Messages on page 221. Change your oil as
soon as possible within the next 600 miles
(1 000 km). It is possible that, if you are driving
under the best conditions, the oil life system may
not indicate that an oil change is necessary for
over a year. However, your engine oil and
lter must be changed at least once a year and at
this time the system must be reset. Your dealer
has GM-trained service people who will perform
this work using genuine GM parts and reset
the system. It is also important to check your oil
regularly and keep it at the proper level.
If the system is ever reset accidentally, you must
change your oil at 3,000 miles (5 000 km)
since your last oil change. Remember to reset the
oil life system whenever the oil is changed.
340

What to Use
Use a mixture of one-half clean, drinkable water
and one-half DEX-COOL®coolant which will
not damage aluminum parts. If you use this coolant
mixture, you do not need to add anything else.
{CAUTION:
Adding only plain water to your cooling
system can be dangerous. Plain water, or
some other liquid such as alcohol, can
boil before the proper coolant mixture will.
Your vehicle’s coolant warning system is
set for the proper coolant mixture. With
plain water or the wrong mixture, your
engine could get too hot but you would
not get the overheat warning. Your engine
could catch re and you or others could
be burned. Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
®coolant.Notice:If you use an improper coolant
mixture, your engine could overheat and be
badly damaged. The repair cost would not be
covered by your warranty. Too much water
in the mixture can freeze and crack the engine,
radiator, heater core, and other parts.
If you have to add coolant more than four times a
year, have your dealer check your cooling
system.
Notice:If you use extra inhibitors and/or
additives in your vehicle’s cooling system, you
could damage your vehicle. Use only the
proper mixture of the engine coolant listed in
this manual for the cooling system. See
Recommended Fluids and Lubricants on
page 452for more information.
348