1997 Oldsmobile Aurora Owner's Manual - Page 265

I RECOMMENDED VISCOSITY SAE GRADE ENGINE OILS FOR BEST FUEL ECONOMY ANDCOLDSTARTING,SELECTTHE LOWEST SAE VISCOSITY GRADE 011 FOR THE EXPECTED TEMPERATURE RANGE. ~ ~~~~~ I ~- ~~ ~ ~~~ LOOK HOT WEATHER , ' As shown in the chart, SAE low-30 is best for your vehicle. However, you can use SAE 5W-30 if it's going to be colder than 60°F (16°C) before your next oil change. When it's very cold, 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 20W-50. "F - , "C \ + l o o - - t38 I NOTICE: I +eo- - t27 +60--t16 t401 ? t 4 +20 --7 0 --le I I I -1 I Use only engine oil with the American Petroleum Institute Certified For Gasoline Engines "Starburst" symbol. Failure use the to recommended oil can result in engine damage not covered by your warranty. GM Goodwrench@ oil meets all the requirements for your vehicle. SAE 1OW-30 PREFERRED above b"F (-18°C) SAE 5W-30 COLD WEATHER DO NOT USE SAE 2OW-50 OR ANY OTHER GRADE OIL NOT RECOMMENOED below If you are in an area where the temperature falls -20°F (-29"C), consider using either an SAE 5W-30 synthetic oil or an SAE OW-30 oil. Both will provide easier cold starting and better protection for your engine at extremely low temperatures. 6-13