Crankcase

TYPE SG(Motor Oil, API Service SG)++
CAPACITY, Refill:
‡Corvette Code P, engine oil must also meet GM spec. 4718M. Oil meeting this spec. may also be identified as synthetic.

1990-92 3.4 Corvette Code J 7.1 Liters 7.6 Quarts
Others 3.8 Liters 4.0 Quarts
Capacity shown is without filter. When replacing filter, additional oil may be needed

Corvette 5.7 Code J:
Above 40°F (4°C) 30‡
Above 0°F (-18°C) 10W-30*
Below 60°F (16°C) 5W-30
Others:
Above 40°F (4°C) 30‡
Above 0°F (-18°C) 10W-30
All temperatures 5W-30*
*Preferred

‡Use only if other specified grades are unavailable