A low level of electrolyte fluid will cause the battery to discharge quickly.

Inspect the electrolyte level at least once a week. If it is low, remove the caps and add enough distilled water to bring the level between the upper and lower level (illustration).
Do not overfill.
Examine the specific gravity of the electrolyte with a hydrometer, especially during cold weather. If it is low, recharge the battery.
Battery Maintenance
Battery RechargingMazda 6 Owners Manual: Panel light control switch inspection
1. Connect the connector to the panel light control switch.
2. Connect the negative battery cable.
3. Measure the voltage at the panel light control switch using voltmeter.
When inspecting terminal B for continuity, disconnect the panel light
control switch connector.
4. If the value are ...
Mazda 6 Owners Manual: Aluminum Wheel Maintenance
A protective coating is provided over the aluminum wheels. Special care is needed
to protect this coating.
CAUTION
Do not use any detergent other than mild detergent. Before using any detergent,
verify the ingredients. Otherwise, the product could discolor or stain the aluminum
wheels.
NOTE ...