Do not modify your vehicle in a manner that may affect its handling, stability, or reliability, or install non-genuine Honda parts or accessories that may have a similar effect.
Even minor modifications to vehicle systems can affect overall vehicle performance.
Always make sure all equipment is properly installed and maintained, and do not make any modification to your vehicle or its systems that might cause your vehicle to no longer meet federal, state, province, territory, and local regulations.
Do not modify or attempt to repair any of the electrical components.
Honda Civic Owners Manual. Checking the Coolant
Check the amount of coolant in the reserve
tank.
If the coolant level is below the MIN mark,
add the specified coolant until it reaches
the MAX mark.
Inspect the cooling system for leaks.
Engine Coolant
WARNING
Removing the reserve tank cap while the
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