Maintenance / 1998 Civic HX · Automatic (variable gear ratios) · 4 cyl · 1.6 L

Engine coolant

Check the reservoir level with the engine cold and investigate repeated coolant loss. Coolant type and replacement procedure matter as much as capacity.

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IntervalFirst replacement at 45,000 miles or 36 months; then every 30,000 miles or 24 months in the published schedule. The same coolant intervals apply under severe use.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: Genuine Honda Antifreeze/Coolant, 50% coolant and 50% water VerifiedA major-brand non-silicate coolant for aluminum engines is a temporary substitute only. This evidence does not establish Type 2 backward compatibility.
Engine coolant capacity: 3.4 US qt VerifiedOwner-table change figure includes the 0.4 L reserve and coolant remaining in the engine. Do not treat the dry total as a refill or buying quantity.

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.
Severe-use applicability: Use severe intervals when the car is MAINLY driven on short trips (under 5 miles, or under 10 miles in freezing weather), above 90°F/32°C, with extensive idling/stop-go, with a roof carrier/in mountains, or on muddy, dusty or de-iced roads. Occasional exposure alone does not select severe.