To check the coolant levelTo check the coolant level  - Engine coolant - Maintenance - Mitsubishi Lancer Owner's Manual - Mitsubishi Lancer

A transparent coolant reserve tank (A) is located in the engine compartment.

The coolant level in this tank should be kept between the “LOW” and “FULL” marks when measured while the engine is cold.

To add coolant

    See also:

    Meter, gauge and indication/ warning lamp operation
    Run the engine to check the operation of all meters, gauges, and indication/warning lamps. If there is anything wrong, take the vehicle to an authorized MITSUBISHI dealer for inspection. ...

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