1983 604 L4-2304cc 23L DSL XD-2 Engine Oil Capacity: Page 151
Engine Oil: Fluid Type Specifications
1981.......................................................................................................................................................................CC,SE/CC(Motor Oil, API Service CC)
1982-85.............................................................................................................................................................................CD*(Motor Oil, API Service CD)
*CCmay be used but requires reduced oil change interval, 3,000 mi (5,000 km)
14° to 32°F (-10°C)...............................................................................................................................................................................................................20
Below 14°F (-10°C)..............................................................................................................................................................................................................10
All temperatures...........................................................................................................................................................................................................10W-40
Above 14°F (-10°C).....................................................................................................................................................................................................15W-40
Below 14°F (-10°C).....................................................................................................................................................................................................10W-30