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:
(Not available in all markets.)
Connected Safety communicates information between your vehicle and other vehicles
via the Internet1. The function is designed to notify the driver of any
hazardous road conditions ahead.
The function can notify the driver if another vehicle further down the road has
activated its hazard warning flashers or detected slippery road conditions...
(Option/accessory.)
The Curve Speed Assist (CSA) function can be activated as a supplement to
Adaptive Cruise Control* or Pilot Assist*. The driver can also deactivate the function.
Activate or deactivate the function
using this button in the center display's Function view...