1993 Pontiac Bonneville Owner's Manual - Page 233

Service t Appearance Care S SAE low-30 As shown in the viscosity chart, SAE 1OW-30 is best for your vehicle. . However, you can use SAE 5W-30 if For best fuel economy and cold starting, it's going to be colder than 60°F '; , select thelowest SAE viscosity grade oil,:;:?,:! for the expected temperature range 16°C) before your next oil change. When it's very cold, below 0°F (-18"C), you should use SAE 5W-30. These numbers on an oil container show its viscosity, or thickness. Do not use other viscosityoils such as SAE 1OW-40 or SAE 20W-50. Energy Conserving 11 Oils with these wordson the container will help you save fuel. This doughnut-shaped logo (symbol) is used on most oil containers to help you select the correctoil. You should look for this on the oil container, and use only those oils that display the logo. IF NEITHER SAE 5W-30 NOR SAE 1OW-30 GM Goodwrench@ Oil(in Canada, GM GRADE OILS ARE AVAILABLE, SAE 30 Engine Oil) meets all the requirements GRADE MAY BE USEDATTEMPERATURES for your vehicle. ABOVE 40 DEGREES F (4 DEGREES C). ',",, 4 ,, What Kindof Oil to Use Look for Three Things: SG "SG" must be on the oil container, either by itself or combined with other quality designations, such as "SGICC," "SGICD," "SF, SG, CC," etc. These letters show American Petroleum Institute (API) levelsof quality. 1 ' If you use oils that don't have the "SG" designation, you can cause engine damage not covered by your warranty. ' , . ' , ,, DO NOT USE SAE 1OW-40, SAE 20W-50 OR ANY OTHER GRADE OIL NOT RECOMMENDED. i' Engine Oil Additives Don't add anything to your oil. Your Pontiac dealer is ready to advise if you think something should be added. ...232