1995 Cadillac Seville Owner's Manual - Page 284

p You should also use the properviscosity oil for your vehicle, as shown in the following chart: RECOMMENDED SAE VlSCOSlTY BRADE ENGINE OILS FOR BESTFUELECONOMYANDCOLOSTARTiNG,SELECTTHELOWEST SAE VISCOSITY GRADE OIL FOR THE EXPECTED TEMPERATURE RANGE. HOT WEATHER COLD WEATHER DO NOT USE SAE 2OW-50 OR ANY OTHER GRADE OIL NOT RECOMMENDED As shown in the chart, SAE 1OW-30 is best for your vehicle. However, you can use SAE 5W-30 if it's goingto be colder than60°F (16OC) before your next oil change. Whenit's very cold, you should use S A E 5W-30. These numberson an oil container show its viscosity, or thickness. Do not use other viscosity oils, suchas S A E 20W-50. NOTICE: Use only engine oil with the American Petroleum Institute Certified For Gasoline Engines "Starburst" symbol. Failure to use the proper oilcan result in engine damage not covered by your warranty. 6-13