Honda Civic Service Manual: Engine Cooling

Engine

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Coolant Replacement (R18A9)

1. Radiator Cap 1. Wait until the engine is cool, then carefully remove the radiator cap. ...

See also:

Honda Civic Owners Manual. Dust and Pollen Filter
The heating system*/climate control system* is equipped with a dust and pollen filter that collects pollen, dust, and other debris in the air. The Maintenance MinderTM messages will let you know when to replace the filter. We recommend that you replace the dust and pollen filter sooner when ...