Fluid · Engine Oil
Engine Oil
for 1968 Oldsmobile Cutlass S 455ci V8 · RWD
Fluid Type
10W-40 or 10W-30 conventional
Spec: API SF or SG
Capacity
5qt
4.73 L
Drain & Refill
5 qt
4.73 L
Change Interval
3,000 mi
4,827 km
Notes
With filter change. 455 Rocket V8 (if available in 1968 - verify, as 455 typically started 1968 mid-year), use high-zinc oil for flat tappet cam
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