Maintenance / 1990 Civic Wagon · Manual 5-speed · 4 cyl · 1.5 L
Engine coolant
Follow the original wagon coolant specification and bleeding procedure. Never open the hot radiator cap. Refill numbers differ between the procedure and capacity table, so numeric capacity remains held.
IntervalFirst replace at 45,000 mi / 72,000 km or 36 months; thereafter 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.
- Coolant specification
- Honda-recommended antifreeze/coolant for aluminum engines, mixed 50/50 with low-mineral or distilled water; do not mix different coolants. VerifiedThe 1990 manual’s original specification; a present-day substitute requires separate verified compatibility.
- Cooling-system precautions
- Never open a hot pressurized cooling system. A total-system capacity is not necessarily the amount that drains during a routine change; follow the engine-specific bleeding procedure.