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. Maintaining Genuine Leather
To properly clean leather:  Use a vacuum or soft dry cloth first to remove any dirt or dust.  Clean the leather with a soft cloth dampened with a solution comprised of 90% water and 10% neutral soap.  Wipe away any soap residue with a clean damp cloth.  Wipe away r ...