oil additives CHEVROLET SILVERADO 2007 1.G Owners Manual

Service........................................................ 488
Accessories and Modications................... 488
California Proposition 65 Warning.............. 489
Doing Your Own Service Work.................. 489
Adding Equipment to the Outside of
Your Vehicle.......................................... 490
Fuel............................................................. 490
Gasoline Octane........................................ 491
Gasoline Specications.............................. 491
California Fuel........................................... 491
Additives................................................... 492
Fuel E85 (85% Ethanol)............................ 493
Fuels in Foreign Countries........................ 494
Filling the Tank......................................... 494
Filling a Portable Fuel Container............... 497
Checking Things Under the Hood.............. 498
Hood Release........................................... 498
Engine Compartment Overview.................. 500
Engine Oil (Gasoline Engine).................... 502
Engine Oil Life System.............................. 505Engine Air Cleaner/Filter
(Gasoline Engines)................................. 507
Automatic Transmission Fluid.................... 510
Engine Coolant.......................................... 514
Coolant Surge Tank Pressure Cap............ 517
Engine Overheating................................... 517
Overheated Engine Protection
Operating Mode (V8 Engines Only)........ 520
Cooling System......................................... 521
Engine Fan Noise..................................... 526
Power Steering Fluid................................. 526
Windshield Washer Fluid........................... 527
Brakes...................................................... 529
Battery...................................................... 533
Jump Starting............................................ 534
Rear Axle.................................................... 540
Four-Wheel Drive........................................ 541
Front Axle................................................... 543
Section 5 Service and Appearance Care
485

E85 has less energy per gallon than gasoline, so
you will need to rell the fuel tank more often
when using E85 than when you are using gasoline.
SeeFilling the Tank on page 494.
Notice:Some additives are not compatible
with E85 fuel and can harm your vehicle’s fuel
system. Damage caused by additives would
not be covered by your new vehicle warranty.
Notice:Your vehicle was not designed for
fuel that contains methanol. Do not use
fuel containing methanol. It can corrode metal
parts in the fuel system and also damage
plastic and rubber parts. That damage would
not be covered under your warranty.
Fuels in Foreign Countries
If you plan on driving in another country outside the
United States or Canada, the proper fuel might be
hard to nd. Never use leaded gasoline or any other
fuel not recommended in the previous text on fuel.
Costly repairs caused by use of improper fuel would
not be covered by your warranty.
To check the fuel availability, ask an auto club, or
contact a major oil company that does business
in the country where you will be driving.
Filling the Tank
If your vehicle has the DURAMAX®Diesel engine,
see the DURAMAX®Diesel manual for more
information.
{CAUTION:
Fuel vapor burns violently and a fuel re
can cause bad injuries. To help avoid
injuries to you and others, read and follow
all the instructions on the pump island.
Turn off your engine when you are
refueling. Do not smoke if you are near
fuel or refueling your vehicle. Do not use
cellular phones. Keep sparks, ames, and
smoking materials away from fuel. Do not
leave the fuel pump unattended when
refueling your vehicle. This is against the
law in some places. Do not re-enter the
vehicle while pumping fuel. Keep children
away from the fuel pump; never let
children pump fuel.
494

GM Goodwrench®oil meets all the requirements
for your vehicle.
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 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 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 281. 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.
505

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 639for more information.
515

Entry Lighting.............................................. 228
Event Data Recorders (EDR)...................... 659
Exit Lighting................................................ 228
Extender, Safety Belt..................................... 45
Exterior Lamps............................................ 223
F
Filter
Engine Air Cleaner................................... 507
Finish Damage............................................ 608
Fixed Mast Antenna.................................... 373
Flashers, Hazard Warning........................... 213
Flash-to-Pass.............................................. 216
Flat Tire...................................................... 579
Flat Tire, Changing...................................... 580
Flat Tire, Storing......................................... 596
Fluid
Automatic Transmission............................ 510
Power Steering........................................ 526
Windshield Washer.................................. 527
Fog Lamp
Fog .......................................................... 226
Fog Lamp Light........................................... 267
Four-Wheel Drive...............................149, 541
Four-Wheel-Drive Light................................ 267
Front Axle................................................... 543Fuel............................................................ 490
Additives.................................................. 492
California Fuel.......................................... 491
E85 (85% Ethanol)................................... 493
Filling a Portable Fuel Container.............. 497
Filling Your Tank...................................... 494
Fuels in Foreign Countries....................... 494
Gage....................................................... 268
Gasoline Octane...................................... 491
Gasoline Specications............................ 491
Low Warning Light................................... 269
Fuses
Center Instrument Panel Fuse Block........ 614
Fuses and Circuit Breakers...................... 612
Instrument Panel Fuse Block................... 612
Underhood Fuse Block............................. 615
Windshield Wiper..................................... 611
G
Gage
Engine Coolant Temperature.................... 260
Fuel......................................................... 268
Oil Pressure............................................. 265
Speedometer........................................... 250
674