See also:

Brake fluid
Location of the brake fluid reservoir Checking the level The fluid reservoir is concealed under the round cover at the rear of the engine compartment. The round cover must be removed first be ...

The Moves
While the interior is the S80's standout area, the driver's digs were never the old model's main fault — a lackluster driving experience was. The S80's optional V-8 engine adds some excitement, ma ...

Heated oxygen sensors
The heated oxygen sensors monitor the oxygen content of the exhaust gases. Readings are fed into a control module that continuously monitors engine functions and controls fuel injection. The r ...