1994 CADILLAC DEVILLE octane

Downloaded from www.Manualslib.com manuals search engine You should keep a record with all parts receipts and list the mileage and
the date
of any service work you perform. See “Maintenance Record” in
the Index.
n
I NOTICE:
If you try to do your own service work without knowing enough
about it, your vehicle could be damaged.
FUEL
Use premium unleaded gasoline rated at 91 octane or higher. It should
meet specifications
ASTM D4814 in the U.S. 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
II
249
-I______

Downloaded from www.Manualslib.com manuals search engine not occur.) If you’re using 91 or higher octane unleaded gas and you still
get heavy knocking, your engine needs service.
What about gasoline with blending materials that contain oxygen
(oxygenates), such as MTBE or alcohol?
MTBE is “methyl tertiary-butyl ether.” Fuel that is no more than
15%
MTBE is fine for your Cadillac.
Ethanol is ethyl or grain alcohol. Properly-blended fuel that is no more
than
10% ethanol is fine for your Cadillac.
I Methanol is methyl or wood alcohol.
NOTICE:
Fuel that is more than 5% methanol is bad for your vehicle.
Don’t use it. It can corrode metal parts in your fuel system and
also damage plastic and rubber parts. That damage wouldn’t be
covered under your warranty. And even at
5% or less, there must
be “cosolvents” and corrosion preventers in this fuel to help
avoid these problems.
Gasolines for Cleaner Air
Your use of gasoline with deposit control 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 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 reco.mmends 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.
250
ip

Downloaded from www.Manualslib.com manuals search engine Ly ENGINE COOLING SYSTEM
Radiator Cap Relief Pressure ................. 15.0 psi (103 kPa)
Thermostat Starts To Open
................ 192-199'F (89-93OC)
Water Pump Type
................................. Centrifugal
Drive Belt
....................................... Serpentine
Radiator Core
................................... Aluminum
Radiator Cooling Fans (2)
............................ Electric
FUEL SYSTEM
Induction Type ............ Sequential Port Fuel Injection (SPFI)
System Pressure
.................... .33.4-43.5 psi (230-300 kPa)
Idle Speed
.................................. ECM Controlled
Filter Type
............................... Paper Type Element
Fuel Pump
................................ Electric (In Tank)
Fuel Required ................. Premium Unleaded (91 Octane)
AUTOMATIC TRANSAXLE
Trade Name ............................. Hydra- Matic 4T60E
Type ..................................... 4-Speed Automatic
.................................... Viscous Converter Clutch
Fluid Required
............... DEXRON IIE@or DEXRON HI@
Axle Ratio
........................................... 2.73:l
EMISSION CONTROL SYSTEMS
Exhaust Gas Recirculation .................... Controlled Flow
Catalytic Converter
......................... Ceramic Monolith
Evaporative Emission Control
................ Charcoal Canister
Crankcase Emission Control
....................... PCV Valve
Electronic System
..................... Open and Closed Loop
327
-

Downloaded from www.Manualslib.com manuals search engine .
MTBE In Gasoline ................................. 250
Mud. If You’re Stuck
In ............................. 247
N
“N” (Neutral) Gear Position .......................... 92
Net. Convenience
................................... 78
Night. Driving At
................................... 191
Nightvision
....................................... 192
Notices About Damage
................................ 2
New Vehicle
“Break-In”
.............................. 85
0
Occupant Restraint .................................. 11
Octane Required For Your Car ....................... 249
Odometer
......................................... 132
Odometer And Speedometer ......................... 131
Odometer. Trip
.................................... 131
Off (Ignition Key Position) ............................ 86
Off Road Recovery ................................. 187
Oil. Engine
........................................ 259
Oil. When To Change Your Engine .................... 264
Oil Life Indicator
................................... 148
Oil Quality
........................................ 261
Oil Thickness (Viscosity)
............................ 262
Operating Record
....................... See Maint . Book
Operation in Foreign Countries
....................... 251
Outside Air
....................................... 153
Outside Mirrors
.................................... 125
Overdrive, Automatic
................................ 93
Overheated Engine, Warning Light For ................ 136
Override, Trunk Security
......................... ... 77
Owner Checks & Services ................. See Maint . Book
“P” (Park) Position
.................................. 91
Paint Spotting. Chemical
............................ 309
Park. Shifting Into
................................... 96
Park. Shifting Out
Of ................................ 98
Parking Brake
...................................... 95
Parking On Hills ................................... 213
Parking
Ozr Things That Burn ........................ 99
Passing Another Vehicle
............................. 188
Park Position
....................................... 91
PASS Key (Personalized Automotive Security Sys)
...... 84
10
.- . i
F-
LL
.
.-
L--.a
.IC-
.
.
c-
Li
r
.
L-r
. 7
.