oil additives BUICK RIVIERA 1993 Owners Manual

I
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 €or
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.
Fuels in Foreign Countries
If you plan on driving in another country outside the
U.S. or Canada, unleaded fuel may be hard to find. Do
not use leaded gasoline. If you use even one tankful,
your emission controls won’t work well or at all. With
continuous use, spark plugs can get fouled, the exhaust system can corrode, and your engine oil can deteriorate
quickly. Your vehicle’s oxygen sensor will be damaged.
All of that means costly repairs that wouldn’t be covered
by your warranty.
To check on fuel availability, ask an auto club, or
contact a major oil company that does business in the
country where you’ll be driving.
You can also write us at the following address for
advice. Just tell us where you’re going and give your
Vehicle Identification Number
(VIN).
General Motors of Canada Ltd.
International Export Sales
P.O. Box 828
Oshawa, Ontario L1H 7N1, Canada
218

RECOMMENDED SAE VISCOSITY BRADE ENGINE: OILS
FOR BEST FUEL ECONOMY AND COW STARTlW6, SELECT THE LOWEST
SAE VISCOSITY GRADE OIL FOR THE EXPECTED TEMPERATURE RANGE.
HOT
WEATHER r
"F
-100 '
+a0 '
+60
+40
+20 '
7
"C
I +3a
. +27
,+16
+4
-7
- 18
WEATHER
LOOK
@
FOR THIS
LABEL $+';J
-- SAE T. 10W.30
PREFERRED above 0°F (-18°C)
IF NEITHER SAE 5W-30 NOR SAE 1OW-30
GRADE OILS ARE AVAILABLE, SAE 30
GRADE MAY BE USED AT TEMPERATURES
ABOVE
40 DEGREES F (4 DEGREES C).
DO NOT USE SAE
1OW-40, SAE 2OW-50 OR ANY OTHER GRADE OIL NOT RECOMMENDED
SAE 1OW-30
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 OF (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.
0 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 Buick dealer is ready to advise
if you think
something should be added.
226

Part 9 Index
I
I
Acc (Ignition Key Position) ........................ 72
Accessory Power. Retained
......................... 83
Adding Brake Fluid
.................................. 236
Coolant
.............................. 199.202. 23 1
Electrical Equipment
.......................... 125
Power Steering Fluid
.......................... 234
Transaxle/Transmission Fluid
.................... 229
Windshield Washer Fluid
....................... 235
Additives. Engine Oil
............................. 226
Adjustment. Brake
............................... 157
Adult Safety Belt Usage
............................ 26
AirBag
......................................... 32
Aircleaner
..................................... 228
Airconditioner
................................. 119
Airoutlets
..................................... 118
Airsystem
..................................... 118
Alcohol. Driving Under the Influence of
.............. 148
Alcohol in Gasoline
.............................. 2 17
Aluminum Wheels. Cleaning
....................... 257
AM Radio Reception
............................. 124
Engineoil
................................... 224
. ..
K . . B
AM Stereo Radio Reception ....................... 124
Antenna
....................................... 137
Antifreeze
...................................... 231
Antilock Brake System
........................... 154
Anti-Theft Tips
................................... 66
Appearance Care
................................ 252
Armrest Storage
................................. 104
Astroroof
...................................... 102
Audio Systems
.................................. 124
Automatic Door Locks
............................. 63
Automatic Pull-Down Feature
....................... 64
Automatic Overdrive
.............................. 77
Automatic Transaxle
.............................. 75
Automatic Transaxle Fluid
......................... 229
Automatic Transaxle Torque Lock
................... 178
Antilock Braking System Warning Light
.............. 112
Appearance Care and Maintenance Materials
.......... 260
Ashtrays
....................................... 103
Baby. Holding a
................................. 44
Battery
........................................ 237