1997 Buick Park Avenue Owner's Manual - Page 279

RECOMMENDED SAE VISCOSITY GRADE ENGINE OILS FOR BESTFUELECONOMYANDCOLDSTARTING,SELECTTHELOWEST SAE VISCOSITY GRADE OIL FOR THE EXPECTED TEMPERATURE RANGE. As shown in thechart, SAE 1OW-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. e .- H IT WE4 'HER "F c1oo- LOOK FOR MIS SYMBOL "( t3 + 80 - t2 tl 1.4 + 60 +40- + 20 0- -7 -1 SAE I PREFERRED above 0°F I-18"C) SAE 5W-30 I I 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. 1OW-30 COLD WEATHER DONOTUSE SAE 2OW-50 OR ANY OTHER GRADE OIL NOT RECOMMENDED If you are in an area where the temperature falls below -20°F (-29"C), consider using either an SAE 5W-30 synthetic oil or an SAE OW-30 oil. Both willprovide easier cold starting and better protectionfor your engine at extremely low temperatures. 6-15