Maintenance / 1990 Civic Wagon 4WD · Manual 5-speed · 4 cyl · 1.6 L

Rear differential oil

Owner-table capacity reference; not a verified drain/refill procedure. Confirm the actual AWD system and use its specified oil.

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Interval4WD only: replace every 30,000 mi / 48,000 km or 24 months, whichever comes first.Verified

01 / Requirements

Configuration-specific service and fitment facts

These sourced values are shared by the specification sheet and the maintenance guides for this exact configuration.

Rear differential capacity (owner reference): 0.7 US qt Verified4WD only; routine change 0.65 L (0.69 US qt, 0.57 Imp qt), not total capacity. Check level at the filler opening on level ground with engine off.
Rear differential oil specification: Original manual: hypoid gear oil API GL-5, SAE 90 above 5°C (41°F) or SAE 80 below 5°C (41°F). VerifiedThe 1990 manual’s original specification; a present-day substitute requires separate verified compatibility.

Source

1990 Honda Civic Wagon / Real Time 4WD Owner’s Manual — CW9090O00060A.pdf

Source ↗

Original Honda-hosted wagon-manual section. Introduction explicitly covers both 2WD and 4WD despite the index title. Facts only; keep drivetrain, transmission, equipment and temperature conditions. Historical fluid specifications do not verify a modern replacement product.

United States;1990 Civic Wagon and Real Time 4WD wagon; exact drivetrain/transmission branches1990 Civic Wagon / Real Time 4WD Owner’s Manual, CW9090O00060A.pdf, printed 62 / PDF3; rear-differential row marked4WD only; CW9090MAINIDX identifies 1990, and CW9090OINTROD.pdf printed2 explicitly covers both Civic Wagon and Civic Wagon with Real Time 4WD.

1990 Honda Civic Wagon / Real Time 4WD Owner’s Manual — CW9090O00071A.pdf

Source ↗

United States;1990 Civic Wagon and Real Time 4WD wagon; exact drivetrain/transmission branchesRear differential capacity (owner reference): 1990 Civic Wagon / Real Time 4WD Owner’s Manual, CW9090O00071A.pdf, printed 72 / PDF2; CW9090MAINIDX identifies 1990, and CW9090OINTROD.pdf printed2 explicitly covers both Civic Wagon and Civic Wagon with Real Time 4WD.Rear differential oil specification: 1990 Civic Wagon / Real Time 4WD Owner’s Manual, CW9090O00071A.pdf, printed 72 / PDF2; CW9090MAINIDX identifies 1990, and CW9090OINTROD.pdf printed2 explicitly covers both Civic Wagon and Civic Wagon with Real Time 4WD.