Volvo XC90: Specifications / Fuel tank volume
The fuel tank's refillable volume is shown in the table below.

The medium in the hydraulic brake system is called brake fluid and is used
to transfer pressure from e.g. a brake pedal via a master brake cylinder, which
in turn actuates the brake calipers...
The climate system in the vehicle uses a freon-free R1234yf refrigerant. For
information regarding the refrigerant, refer to the decal located on the inside
of the hood...
Other information:
Suitable child restraints should always be used when children travel in the
vehicle.
Child restraint systems
Infant seat
There are three main types of child restraint systems: infant seats, convertible
seats and booster cushions. They are classified according to the child's age and
size...
In a collision in which the activation level is reached for the pyrotechnic
seat belt tensioners or airbags, or if a collision with a large animal is detected,
the vehicle's brakes will be automatically activated. This function is intended
to help prevent or reduce the effects of any subsequent collision...