1993 CADILLAC DEVILLE fuel additives

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A CAUTION:
You can be injured if you try to do service work on a vehicle
without knowing enough about it.
Be sure you have sufficient knowledge, experience, and the
proper replacement parts and tools before you attempt any
vehicle maintenance task.
Be sure to use the proper nuts, bolts and other fasteners.
“English” and “metric” fasteners can be easily confused.
If
you use the wrong fasteners, parts can later break or fall off.
You could be hurt.
FUEL
Use premium unleaded gasoline rated at 91 octane or higher. It should
meet specifications ASTM
D4814 in the US. and CGSB 3.5-92 in
Canada. These fuels should have the proper additives,
so you should not
have to add anything to the fuel.
In the
U.S. and Canada, it’s easy to be sure you get the right kind of
gasoline (unleaded). You’ll see “UNLEADED” right on the pump. And
only unleaded nozzles will fit into your vehicle’s filler neck.
Be sure the posted octane is at least 91.
If the octane is less than 91, you
may get a heavy knocking noise when you drive.
(In an emergency, you
may be able
to use lower octane -- as low as 87 -- if heavy knocking does
not occur.)
If you’re using 91 or higher octane unleaded gas and you still
get heavy knocking, your engine needs service.
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Downloaded from www.Manualslib.com manuals search engine What about gasoline with blending materials that contain oxygen, such as
MTBE or alcohol?
MTBE is “methyl tertiary-butyl ether.” Fuel that is
no more than 15%
MTBE is fine for your car.
Ethanol is ethyl or grain alcohol. Properly-blended fuel that is no more
than
10% ethanol is fine for your car.
Methanol is methyl or wood alcohol.
Gasolines for Cleaner
Air
Your use of gasoline with detergent additives will help prevent deposits
from forming in your engine and fuel system. That helps keep
your
engine in tune and your emission control system working properly. It’s
good for your vehicle, and you’ll be doing your part for cleaner air.
Many gasolines are
now blended with materials called oxygenates.
General Motors recommends that you use gasolines with these blending
materials, such as
MTBE and ethanol. By doing so, you can help clean
the air, especially in those parts of the country that have high carbon
monoxide levels.
In addition, some gasoline suppliers are now producing reformulated
gasolines. These gasolines are specially designed to reduce vehicle
emissions. General Motors recommends that you use reformulated
gasoline.
By doing so, you can help clean the air, especially in those parts
of the country that have high ozone levels.
You should ask your service station operators if their gasolines contain
detergents and oxygenates, and if they have been reformulated to reduce
vehicle emissions.
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As shown in the viscosity chart, SAE 1OW-30 is best for your vehicle.
However, you can use
SAE 5W-30 if it’s going to be colder than 60°F
(16°C) before your next oil change. When it’s very cold, below
O°F
(-18”C), you should use SAE 5W-30.
These numbers
on an oil container show its viscosity, or thickness. Do not
use other viscosity oils such as SAE 1OW-40 or SAE
20W-50.
Energy Conserving I1
Oils with these words on the container will help you save fuel.
This doughnut-shaped logo (symbol) is used on most
oil containers to
help you select the correct
oil.
You should look for this on the oil container, and use only those oils that
display the logo.
GM Goodwrench@
oil (in Canada, GM Engine Oil) meets all the
requirements for your vehicle.
Engine Oil Additives: Don’t add anything to your oil. Your Cadillac
dealer is ready to advise if you think something should be added.
When to Change Engine Oil: Your vehicle is equipped with an Engine Oil
Life Index (EOLI) feature. Oil change intervals are determined by the
EOLI and will usually fall at, or between, the two recommended
alternative intervals of 3,000 miles
(5,000 kilometers) and 7,500 miles
(12,500 kilometers), but could be shorter than 3,000 miles (5,000
kilometers) under some very severe driving conditions shown in Schedule
I. The system will also indicate the need for an oil change if 7,500 miles
(12,500 kilometers) has been driven.
Engine oil life remaining is displayed through the Fuel Data center and as
a
“CHANGE OIL SOON” light. The Fuel Data center display includes a
number between
0 and 100. This is the percentage of oil life
REMAINING based on driving conditions and mileage driven since the
last time the oil life indicator was reset.
The EOLI will not detect excessively dusty conditions or engine
malfunctions which may effect the
oil. If you drive in dusty areas, change
the engine
oil after every 3,000 miles (5,000 kilometers) or 3 months
(whichever comes first), unless instructed to
do so sooner by the EOLI.
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Disposal. Used Oil ................................. 273
Doing Your Own Service Work ....................... 260
Door Locks ........................................ 60
Downhill. Parking .................................. 209
Downshifting ....................................... 81
Driver’s Side S.I.R. (“Air Bag”) ........................ 28
Driving
And the Road. Your
..............................
AtNight ........................................
Defensive ......................................
Hill and Mountain ...............................
In A Foreign Country ............................
InCities ........................................
In Fog, Mist And Haze ...........................
InTheRain .....................................
InWinter .......................................
On A Long Trip .................................
On Snow Or Ice .................................
On The Freeway .................................
OnCurves ......................................
Winter .........................................
Drunken Driving ...................................
Dual Braking System ................................
166
193
175
206
263
201
199
196
212
204
213 203 187
212
176
121
“E. .. Flashing. On Fuel Data Center ................... 130
Electric Outside Mirror Control ....................... 111
Electrical Equipment. Adding ........................ 327
Electronic Climate Control .......................... 139
Electronic Level Control ............................ 136
Electronic Solar Sensor ............................. 143
Emergencies. Braking in ............................. 186
Emergencies. Steering In ............................ 188
Emergency Starting. Discharged Battery ............... 227
Emergency Towing ................................. 232
Engine
Block Heater (Option)
............................ 77
Coolant ........................................ 278
Coolant Temp Light .............................. 125
Oil ............................................ 268
Oil Additives .................................... 272
Oil Light ....................................... 127
Oil. When To Change ............................ 272
Overheating .................................... 236
StartingYour .................................... 76
Warning Light About Need For Service ............. 120