2003 Pontiac Grand Prix Owner's Manual - Page 247
2003 Pontiac Grand Prix Manual
Page 247 highlights
RECOMMENDED SAE VISCOSITY GRADE ENGINE OILS Notice: Use only engine oil with the American - FOR BEST FUEL ECONOMY AND COLD STARTING, SELECT THE LOWEST I L SA€ VISCOSITY GRADE O FOR THE EXPECTED TEMPERATURE RANGE. 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. If you are in an area of extreme cold, where the temperature falls below -20°F (-29"C), it is recommended that you use 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. HOT WEATHER LOOK FOR THIS SYMBOL 8- SAE 1OW-30 PREFERRED above 0°F SAE SW-30 I (-18°C) Engine Oil Additives Don't add anything to your oil. The recommended oils with the starburst symbol are all you will need for good performance and engine protection. 3800 V6 or 3800 V6 Supercharged Engine 5-22