Honda Civic Service Manual: Radiator

Thermostat Housing Removal and Installation (R18Z1)

1141B6 1. Radiator Cap 1. Wait until the engine is cool, then carefully remove the radiator cap. ...

Radiator Connecting Pipe Removal and Installation (K24Z7)

1141E7 1. Radiator Cap 1. Wait until the engine is cool, then carefully remove the radiator cap. ...

See also:

Honda Civic Owners Manual. Fuel Information
Fuel recommendation Unleaded gasoline, pump octane number 87 or higher Use of a lower octane gasoline can cause a persistent, heavy metallic knocking noise that can lead to engine damage. Top tier detergent gasoline Because the level of detergency and additives in gasoline vary in the market, ...