octane BUICK PARK AVENUE 1993 Owners Manual

Fuel
Use regular unleaded gasoline rated at 87 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
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 me
parts in your fuel system and also damage
plastic and rubber parts. That damage woul
I
be covered under your warranty. And even at 5%
or less, there must be “cosolvents” and I
I
corrosion preventers in this fuel to
these problems.
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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.
Fuel
If you have the Supercharged 3800 V6 (L67) engine, 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 9
1. If the octane is
less than
9 1, 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.
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.
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Gages and Warning Indicators ................... 117
Panel
....................................... 101
Time Out Feature
............................. 113
Traffic
...................................... 165
“On” Warning
................................ 101
Operation
.................................... 92
Loading Your Vehicle
............................ 268
Locks. Door
..................................... 62
Locks. Rear Door Security
.......................... 69
Long Distance Driving
............................ 190
Loss of Control
................................. 180
Low Oil Pressure. Warning Light
................... 124
LowFuelLight
................................. 119
Maintenance
Inspections
.................................. 308
Record
...................................... 311
Schedule
.................................... 293
Underbody
.................................. 284
Malfunction Indicator Light
........................ 126
Manualseat
..................................... 14
Markings, Pavement
............................. 166
Master Cylinder, Brake
........................... 263
Memory Seat and Mirrors
.......................... 15
Methanol in Gasoline ............................. 243
Mirrors Automatic
................................... 106
Convex Outside
.............................. 108 Heated
Outside Rearview
....................... 108
Inside
...................................... 106
Outside
..................................... 108
Mist, Driving in
................................. 186
Mobile Telephone, Adding a
....................... 140
Monitors, Lamp
................................. 105
Mountain Driving
................................ 192
MTBE In Gasoline
............................... 243
N (Neutral) Gear Position ......................... 81
Netconvenience
................................ 109
New Vehicle “Break-In”
........................... 74
NightDriving
................................... 181
Nightvision
.................................... 182
Notices About Damage
............................ 11
Octane Required for Your Car
..................... 243
Odometer
...................................... 117
Odometer. Trip
.................................. 117
Off (Ignition Key Position)
......................... 76
Off Road Recovery .............................. 178
Oil. Change Your Engine
...................... 25 1. 293
Oil. Engine
..................................... 251
Oil Pressure Warning Light
........................ 123
Operation in Foreign Countries
..................... 245
Overdrive. Automatic ............................. 82
Overheated Engine
............................... 221
327
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