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1963 MERCURY S-55
390ci V8•RWD•AUTOMATIC•gas
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Repairs0Labor519Torque6Fluid7DTC0Battery1Maintenance0Recalls0
Fluid · Rear Differential

Rear Differential

for 1963 Mercury S-55 390ci V8 · RWD
Fluid Type
80W-90 or 90 weight gear oil
Spec: API GL-1
Capacity
3.5qt
3.31 L
Drain & Refill
3.5 qt
3.31 L
Change Interval
36,000 mi
57,924 km

Notes

9-inch or 8.8-inch rear axle. Do NOT use modern GL-5 with high EP additives on standard gears

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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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