Fluid · Engine Oil
Engine Oil
for 1978 Oldsmobile Cutlass 260ci V8 Diesel · RWD
Fluid Type
15W-40 diesel oil
Spec: API CD or CD-II
Capacity
7qt
6.62 L
Drain & Refill
7 qt
6.62 L
Change Interval
3,000 mi
4,827 km
Data quality
Book-style estimate
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Notes
GM's first 260 diesel V8 (4.3L). Requires diesel-rated oil. Capacity includes filter. Oil change interval critical for diesel longevity
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