1994 OLDSMOBILE BRAVADA octane

Fuel
Use regular unleaded gasoline rated at
87 octane or higher. Use premium
unleaded gasoline rated at 91 octane or
higher for high power performance,
when towing a trailer or with a high
payload requirement. But when
operating with a light load as
a normal
condition, you may use middle grade or
regular unleaded gasolines.
The gasoline you use 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
for premium, 89 for middle grade and
87 for regular.
If the octane is less than
87, you may get a heavy knocking noise
when you drive. If it’s bad enough, it
can damage your engine.
If you’re using fuel rated at 91 octane or
higher and you still hear heavy
knocking, your engine needs service.
But don’t worry
if you hear a little
pinging noise when you’re accelerating
or driving up a hill. That’s normal, and
you don’t have to buy a higher octane
fuel to get rid of it. It’s the heavy,
constant knock that means you have a
problem.
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 vehicle.
Ethanol is ethyl or grain alcohol.
Properly-blended fuel that is no more than
10% ethanol is
fine for your
vehicle.
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.
GasoUnes 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
163
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Index
236
Replacement Bulb .......................... 202
Wiring
............................................. 198
Heater (see
Comfort Controls)
Heater. Engine Block ................. 47. 170
High Beams
........................................ 62
Highway Hypnosis
........................... 128
Hill and Mountain Roads
......... 118. 129
Hood Release
.................................... 165
Safety Warning
............................... 166
Warning. Overheated
Engine
.......................... 145. 147. 148
Horn
.................................................... 54
Hot Engine. Safety
Hydroplaning
.................................... 126
Identification Number. Vehicle
..... 195
Idling Your Engine ....................... 52. 54
If You’re Stuck in Sand. Mud.
Ice or Snow
.................................... 158
Ignition Key
.................................................... 38
Positions ........................................... 45
Warnings
........................ 145. 147.
148
Indicator Lights (see
Warning Lights )
Infant Restraint (see Child Restraints )
Inflation. Tires .................................. 186
Inside Rearview Mirror
...................... 69
Instrument Panel
................................ 77
Instrument Panel Clusters
.................. 78
Instrument Panel Intensity Control
... 63 Instrument
Panel Warning Lights
...... 80
Jack. Tire
........................................ 152
Keys
................................................. 38
Lane Change Indicator
................... 56
Jump
Starting
.................................... 140
Lap-Shoulder Belt
.............................. 18
Front ........................................... 18, 21
Rear
................................................... 22
Use by Children
................................ 25
Lighter
................................................. 73
Lights Center Dome
.................................... 68
Fog
.................................................... 63
Headlights
........................................ 62
Interior
............................................. 67
Reading
....................................... 67, 68
Rear Dome
....................................... 68
Replacement Bulbs
........................ 202
Turn Signal
....................................... 56
Removing
& Replacing Bulbs ........ 181
Taillights ......................................... 182
Underhood
..................................... 166
Warning
............................................ 80
Loading Your Vehicle
.............. 116, 183
Lock, Tailgate ............................. 42, 185
Locks, Door
................................ 39, 185
Locks, Power
...................................... 40 Long
Distance Driving
..................... 128
Low Battery
...................................... 140
Low Oil Pressure Warning
........... 84. 86
Luggage Carrier
.................................. 74
Lumbar Controls
................................ 12
Maintenance Record
................... 219
Maintenance Schedule
..................... 206
Malfunction Indicator Lamp
.............. 89
Manual Front Seat
.............................. 13
Methanol in Gasoline
....................... 163
Mileage Indicator
(see
Odometer)
Mirrors Convex Outside
............................... 70
Power Remote Control
.................... 70
Visor Vanity
..................................... 69
Mountain Driving
..................... 118, 129
Inside
Manual Day/Night
................ 69
New Vehicle “Break-In”
......... 44. 132
Night Driving
.................................... 124
Octane Requirements
Odometer and Trip Odometer
..... 81. 82
Off-Road Driving
...................... 115. 123
(see
Fuel
Requirements)
Oil. Engine ........................................ 168
Capacity
.......................................... 199
Disposing
of Used Oil .................... 170
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Service Station Information
Hood Release Engine Oil
Windshield Washer Fluid Transmission Fluid
See Page 165
See Page 168
See Page 177
See Page
172
Ca
Spare Tire Pressure
See Pages 186 and 199
Fuel
lpacity 20 U.S. Gal. (76 L)
Use unleaded gas only,
87 octane or higher.
See Page 163
Battery
The Delco Freedoms Battery
needs no water.
See Page 180
Cooling System
Check and add coolant only at the
coolant recovery tank. The fluid should
be at the
FULL HOT mark when the
engine
is warm. See Page 174
Cold Tire Pressure
See CertificatiodTire label on the rear
edge
of driver’s door or Capacities E.
Specifications.
See Pages 186 and 199
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