Buick PARKAVENUE 1994 Manual page 242

What Kind of Oil to Use
Beginning midyear 1993, oils of the proper quality for
your vehicle will be identified with this new "starburst"
symbol. The "starburst" symbol indicates that the oil has
been certified by the American Petroleum Institute
(API), and is preferred for use in your gasoline engine.
You should look for this on the front of the oil container,
and use only oils that display this new symbol.
You should also use the proper viscosity oil for your
vehicle, as shown in the following chart:
RECOMMENDED SAE VISCOSITY GRADE ENGINE OILS
FOR BEST FUEL ECONOMY AND COLD STARTING, SELECT THE LOWEST
SAE VISCOSITY GRADE OIL FOR THE EXPECTED TEMPERATURE RANGE.
HOT
WEATHER
LOOK FOR
ONE OF THESE
LABELS
/
'F
%'
-
+ l o 0
- -
+38
+ 8 0 - - + 2 7
+ 6 0 - - + I 6
-
+ 4 0 - - + 4
+20 - - - 7
SAE 1
OW-30
PREFERRED
above 0°F
(-18°C)
SAE 5W-30
a
COLD
WEATHER
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).
ANY OTHER GRADE OIL NOT RECOMMENDED
DO NOT USE SAE 1OW-40, SAE 2OW-50 OR
240