2006 CADILLAC STS fuel type

If your vehicle has the 4.4L V8 engine (VIN Code D), use
premium unleaded gasoline with a posted octane rating
of 91 or higher. For best performance, use premium
unleaded gasoline with a posted octane rating of 93. In
an emergency, you can use regular unleaded gasoline
with an octane rating of 87 or higher. If 87 octane fuel is
used, do not perform any aggressive driving maneuvers
such as wide open throttle applications. You may also
hear audible spark knock during acceleration. Rell your
tank with premium fuel as soon as possible to avoid
damaging your engine. If you are using gasoline rated at
91 octane or higher and you hear heavy knocking, your
engine needs service.
Gasoline Specications
At a minimum, gasoline should meet ASTM
specication D 4814 in the United States or
CAN/CGSB-3.5 in Canada. Some gasolines may
contain an octane-enhancing additive called
methylcyclopentadienyl manganese tricarbonyl (MMT).
General Motors recommends against the use of
gasolines containing MMT. SeeAdditives on page 5-6
for additional information.
California Fuel
If your vehicle is certied to meet California Emissions
Standards, it is designed to operate on fuels that meet
California specications. See the underhood emission
control label. If this fuel is not available in states adopting
California emissions standards, your vehicle will operate
satisfactorily on fuels meeting federal specications, but
emission control system performance may be affected.
The malfunction indicator lamp may turn on and your
vehicle may fail a smog-check test. SeeMalfunction
Indicator Lamp on page 3-67. If this occurs, return to your
authorized GM dealer for diagnosis. If it is determined
that the condition is caused by the type of fuel used,
repairs may not be covered by your warranty.
Additives
To provide cleaner air, all gasolines in the United States
are now required to contain additives that will help
prevent engine and fuel system deposits from forming,
allowing your emission control system to work properly. In
most cases, you should not have to add anything to your
fuel. However, some gasolines contain only the minimum
amount of additive required to meet U.S. Environmental
Protection Agency regulations.
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{CAUTION:
If you spill fuel and then something ignites it,
you could be badly burned. Fuel can spray out
on you if you open the fuel cap too quickly.
This spray can happen if your tank is nearly
full, and is more likely in hot weather. Open
the fuel cap slowly and wait for any hiss noise
to stop. Then unscrew the cap all the way.
Be careful not to spill fuel. Do not top off or overll the
tank, and wait a few seconds after you have nished
pumping before removing the nozzle. Clean fuel from
painted surfaces as soon as possible. SeeWashing
Your Vehicle on page 5-98.
When replacing the fuel cap, turn it clockwise until it
clicks. Make sure the cap is fully installed. The diagnostic
system can determine if the fuel cap has been left off or
improperly installed. This would allow fuel to evaporate
into the atmosphere. SeeMalfunction Indicator Lamp
on page 3-67.The CHECK GAS CAP message will appear on the
Driver Information Center (DIC) display if the fuel cap
is not reinstalled properly. SeeDIC Warnings and
Messages on page 3-79for more information.
{CAUTION:
If a re starts while you are refueling, do not
remove the nozzle. Shut off the ow of fuel by
shutting off the pump or by notifying the station
attendant. Leave the area immediately.
Notice:If you need a new fuel cap, be sure to
get the right type. Your dealer can get one for you.
If you get the wrong type, it may not t properly.
This may cause your malfunction indicator lamp to
light and may damage your fuel tank and emissions
system. SeeMalfunction Indicator Lamp on
page 3-67.
5-9

Cadillac Owner Privileges™
Roadside Service provides several Cadillac Owner
Privileges™ at “no charge,” throughout yourCadillac
Warranty Period — 48 months/50,000 miles (80 000 km).
Emergency Road Service is performed on site for the
following situations:
Towing Service
Battery Jump Starting
Lock Out Assistance
Fuel Delivery
Flat Tire Change (Covers change only)
Trip Interruption — If your trip is interrupted due
to a warranty failure, incidental expenses may
be reimbursed during the 48 months/50,000 miles
(80 000 km) warranty period. Items covered
are hotel, meals, and rental car.
Roadside Service Availability
Wherever you drive in the United States or Canada, an
advisor is available to assist you over the phone. A dealer
technician, if available, can travel to your location within
a 30 mile (50 km) radius of a participating Cadillac
dealership. If beyond this radius, we will arrange to have
your car towed to the nearest Cadillac dealership.
Reaching Roadside Service
Dial the toll-free Roadside Service number:
1-800-882-1112. A Roadside Service Advisor will assist
you and request the following information:
A description of the problem
Name, home address, home telephone number
Location of your Cadillac and number you are
calling from
The model year, Vehicle Identication Number
(VIN), mileage, and date of delivery
Roadside Service for the Hearing or
Speech Impaired
Roadside Service is prepared to assist owners who
have hearing difficulties or are speech impaired.
Cadillac has installed special telecommunication devices
called Text Telephone (TTY) in the Roadside Service
Center.
Any customer who has access to a (TTY) or a
conventional teletypewriter can communicate with
Cadillac by dialing from the United States or Canada
1-888-889-2438— daily, 24 hours.
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