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:
When the vehicle is connected to the Internet, it is possible to use web radio
and music services via apps, download software and contact retailers from the vehicle.
The vehicle can be connected to the Internet using Bluetooth, Wi-Fi or the vehicle's
integrated modem (SIM card)...
Some of the air vents in the passenger compartment can be individually opened,
closed and directed.
Misting can be eliminated by directing the outer air vents towards the door windows.
Direct the outer air vents into the passenger compartment to maintain a comfortable
temperature in warm weather...