octane BUICK LESABRE 1993 Owners Manual

Fuel
Use regular unleaded gasoline rated at 87 octane or
higher. It should meet specifications ASTM D48 14
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 87. 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 87 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 pinging. It’s the heavy, constant knock that means
you have a problem.
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 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.
Fuel that is more than 5% methanol is bad for
your vehicle. Don’t use it. It can corrode I..,
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 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
231

Label. Service Parts Identification .................. 269
Lane Change Indicator
............................. 85
LapBelt
........................................ 38
Lap-Shoulder Belt. Usage by Children
................ 53
Leaving Your Vehicle .............................. 79
Light. Safety Belt
................................. 24
Light.
Turn Signal Indicator ......................... 85
Lighter. Cigarette ................................ 103
Lights
.......................................... 95
Lights
Daytime Running
.............................. 98
Panel
........................................ 96
Time Out Feature
.............................. 96
Traffic
...................................... 152
“On” Warning
................................. 96
Operation
.................................... 86
Lights and Gages. Warning Indicators ................ 106
Loading Your Vehicle
............................ 253
Locks. Door
..................................... 59
Locks. Rear Door Security
.......................... 65
Long Distance Driving ............................ 178
Loss of Control
................................. 168
Low Oil Pressure Warning Light
.................... 112
Maintenance Schedule
.......................... 277
Maintenance Inspections
.................................. 292
Record
...................................... 295
Schedule
.................................... 280
Underbody
.................................. 267
Malfunction Indicator Light
........................ 11 1
Manualseat ..................................... 14 Markings. Pavement
............................. 153
Master Cylinder. Brake ........................... 248
Methanol
in Gasoline ............................. 231
Mirrors Convex Outside
.............................. 100
Heated Outside Rearview
....................... 100
Inside
....................................... 99
Outside
...................................... 99
Visor Vanity
................................. 102
Mist. Driving
in ................................. 173
Mobile Telephone. Adding a
....................... 128
Mountain Driving
................................ 180
MTBE in Gasoline
............................... 231
N (Neutral) Gear Position ......................... 74
Net. Convenience
................................ 101
New Vehicle “Break-In”
........................... 68
NightDriving
................................... 169
Night Vision .................................... 170
Notices About Damage
............................ 11
Octane Required for Your Car
..................... 231
Odometer
...................................... 105
Odometer. Trip
.................................. 105
Off (Ignition Key Position)
......................... 69
Off Road Recovery
.............................. 166
Oil. Engine
..................................... 236
Oil Pressure Warning Light
........................ 112
Operation
in Foreign Countries ..................... 232
Operation of Lights
............................... 86
Oil. Change Your Engine
...................... 239. 277
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