Buick RIVIERA 1993 Manual page 228

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
S A E 1OW-30
As shown in the viscosity chart,
S A E 1OW-30 is best
for your vehicle. However,
you
can use SAE 5W-30
'
if it's going to be colder than 60
O F
(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