1993 Chevrolet Camaro Owner's Manual - Page 232

Service & Appearance Care Recommended SAE Viscosity Grade Engine Oils For best fuel economy and cold starting, SAE select the lowest viscosity grade oil for the expected temperature range. I What Kind of Oil to Use: Look for three things: SG HOT WEATHER LOOK FOR THIS LABEL SG must be on the oil container, either by itself or combined with other quality designations, suchas SG/CC, SG/CD, SF, SG, CC, etc. These letters show American Petroleum Institute (API) levels of quality. I SAE 1OW-30 SAE !?W-30 PREFERRED I NVIIC't: If you use oils that don't have the SG designation, can you cause engine damagecovered not by yc warranty. 228 WEATHER IF NEITHER SAE 5W-30 NOR SAE 1OW-30 GRADE OILS ARE AVAILABLE, SAE 30 GRADE MAY BE USED AT T \TURES ABOVE 40 DEGREES F (4 DLY..LLV C). DO NOT USE SAE lOW-40, M E 2OW-50 OR ANY OTHER GRADE OIL NOT RECOMMENDED. SAE 5W-30 As shown in the viscosity chart, SAE 5W-30 is best for your vehicle. However, you can use SAE 1OW-30 if it's going tobe 0°F (-18°C) or above. These numbers on an oil container show its viscosity, or thickness.Do not use other viscosity oils suchas SAE 1OW-40or SAE 20W-50. EnergyConserving I1 Oils with these words on the container will help you save fuel. This doughnut-shaped logo (symbol) is used on most oil containers to help you select the correct oil.