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 Service Manual. Valve, Spring, and Valve Seal Removal and Installation (R18Z1)
1. Vehicle Lift 1. Raise the vehicle on a lift, and make sure it is securely supported. 2. Tire and Wheel-Removal, Front Right 12x1mm ...