1997 Chevrolet Monte Carlo Owner's Manual - Page 229

RECOMMENDED SAE VISCOSITY GRADE ENGINE OILS FOR BEST FUEL ECONOMY AND COLD STARTING, SELECT THE LOWEST SA€ VISCOSITY GRADE 011 FOR THE EXPECTED TEMPERATURE RANGE. As shown in the chart, if you have the3.4L DOHC engine, SAE 1OW-30 is best for your vehicle. However, you can use SAE 5W-30 if it'sgoing to be colderthan 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. HOT WEATHER +loo+00- WOK FRTI O H S SYMBOL - +38 NOTICE: Use only engine oil with the American Petroleum Institute Certified For Gasoline Engines to "Starburst" symbol. Failure use the recommended oil can result engine damage not in covered by your warranty. GM Goodwrench@oil meets all the requirements for your vehicle. - +27 +60--+16 +40- - + 4 t20---7 O---l8 COLD WEATHER DO NOT USE 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 will provide easier cold starting and better protection for your engine at extremely low temperatures.