Volvo XC90: Specifications / Transmission fluid specifications
Under normal driving conditions, the transmission fluid will not need to be
changed during the transmission's service life. However, it may need to be changed
if the vehicle is driven frequently in adverse driving conditions.

Engine oil of type VCC RBS0-2AE 0W-20 must be used. Lower oil grades may not
offer the same fuel economy, engine performance or engine protection.
Volvo recommends:
General
See the Service and warranty booklet for information about oil change intervals...
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...
Other information:
Park Assist (PAS1) behaves differently depending on which part
of the vehicle is approaching an obstacle.
Front camera
The warning signal has a continuous tone when the obstacle
is less than approx. 30 cm (1 ft) from the vehicle.
The Park Assist system's front sensors are automatically activated when the engine
is started...
Volvo-developed load carriers are recommended for carrying loads on the roof
of the vehicle.
Volvo load carriers are specially designed to help prevent damage to your vehicle
and help ensure maximum safety while driving. Volvo load carriers are available
from authorized Volvo retailers...