1994 Chevrolet Lumina Owner's Manual - Page 170
1994 Chevrolet Lumina Manual
Page 170 highlights
Service & Appearance Care I Recommended SAE Viscosity Grade Engine Oils For best fuel economy and starting, cold select thelowest SAE viscoslty grade oil for the expected temperature range. HOT WEATHER "C +38 What Kind of Oil to Use (CONI) As shown in the chart, SAE 5W-30 is be5 for your vehicle. However, you can use SAE 1OW-30 if it's going to be0°F (- 18"C) or above. These numbers on an oil container show its viscosity,or thickness. Do not use other viscosity oils, such as SAE 1OW-40 or SAE 20W-50. If you cannot find oils with the new "starburst"'symbo1 the front of the on container, you should look for and use oils containing the following three things SGor SH LOOK FOR ONE OF THESE LABELS a, 1 c 21 t 16 c4 -7 - 1B "SG" or "SH" must be on the oil container, either by itself or combined with other quality designations, such as "SG/CD,""SH/CD," "SH,SG,CD," etc. These letters show American Petroleum Institute (API) levels of quality. 1 1 SAE 5W-30 PREFERRED SAE 5W-30 EnergyConserving I1 Oils with these words on the container will help you save fuel. COLD WEATHER IF NEITHER SAE 5W-30 NOR SAE 1OW-30 GRADE OILS ARE AVAILABLE, SAE 30 GRADE MAY BE USED AT TEMPERATURES ABOVE 40 DEGREES F (4 DEGREES C). DO NOT USE SAE 1OW-40, SAE 2OW-50 OR ANOTHER GRADE OIL NOT RECOMMENDED. ...168 I