1997 Pontiac Grand Am Owner's Manual - Page 243
1997 Pontiac Grand Am Manual
Page 243 highlights
~ ~ ~ ~~ RECOMMENDED SAE VISCOSITY GRAD€ ENGINE OILS FOR BEST FUEL ECONOMY AND COLD STARTING, SELECT THE LOWEST SAE VISCOSITY GRADE 011 FOR THE EXPECTED TEMPERATURE RANGE. As shown in thechart, SAE 5W-30 is best for your vehicle. However, you can SAE 1OW-30 if it's going use to be 0°F (- 18" C) or above. These numbers on an oil container show its viscosity, or thickness.Do not use SAE 20W-50. other viscosity oils, such as HOT WEATHER LOOK FOR MIS SYMBOL NOTICE: Use only engine oil with the American Petroleum Institute Certified For Gasoline Engines "Starburst" symbol. Failure to use the recommended oil can result in engine damage not covered by your warranty. GM Goodwrench@oil meets all the requirements for your vehicle. SAE S WM PREFERRED d / COLD WEATHER DO NOT USE SAE 2OW-50 OR ANY OTHER GRADE OIL NOT RECOMMENDED If you are in an area where temperature falls below the -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 your engine for at extremely low temperatures. 6-16