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1991 GMC SUBURBAN
7.4L V8•4WD•gas•L19
2 active safety recalls on this vehicle — view recalls
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Repairs0Labor1092Torque280Fluid18DTC0Battery0Maintenance0Recalls2
Fluid · Engine Oil

Engine Oil

for 1991 GMC Suburban 7.4L V8 · 4WD
Fluid Type
5W-30 or 10W-30 conventional
Spec: API SG
Capacity
6qt
5.68 L
Drain & Refill
6 qt
5.68 L
Change Interval
3,000 mi
4,827 km

Notes

With filter. 454 big block requires extra quart vs 350. Can use modern API SN/SP oils which are backwards compatible

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Other fluid systems on this vehicle

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🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years. Spot an error? Use the Help link above — a human reads every report.
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