Honda 1995 Civic Sedan Owner's Manual page 143

Spark Plugs, Battery
(US: EX)
Normal driving conditions
NGK: ZFR5J-11
Nippondensp: KJ16CR-L11
Hot climates, or continuous high
speed driving
NGK: ZFR6J-11
Nippondenso: KJ20CR-L11
Spark Plug Gap:
1.1 mm (0.04 in)
Maintenance
Battery
Check the condition of your car's
battery monthly. You should check
for proper electrolyte level and
corrosion on the terminals.
The battery contains sulfuric
acid (electrolyte) which is highly
corrosive and poisonous.
Getting electrolyte in your eyes
or on your skin can cause
serious burns.
Wear protective clothing and
eye protection when working
near the battery.