Deposit control gasoline (detergent additives)

Volvo recommends the use of detergent gasoline to control engine deposits. Detergent gasoline is effective in keeping injectors and intake valves clean. Consistent use of deposit control gasolines will help ensure good drivability and fuel economy. If you are not sure whether the gasoline contains deposit control additives, check with the service station operator.
NOTE
Volvo does not recommend the use of external
fuel injector cleaning systems.
See also:
Changing the set speed
After a speed has been set, it can be increased or decreased by using the
or
buttons. Each time one of these buttons
is pressed, the vehicle's speed changes by 5 mph (approximately 8 km/h).
...
Engines
The Volvo XC90 is available with a choice of two high-performance engines -
one diesel and one petrol - both of which produce plenty of power and torque
from low engine speeds and through the mid- ...
Common functions: Remote key/ Personal Car Communicator (PCC)*
Personal Car Communicator (PCC)*
Lock
Unlock
Approach lighting
Trunk unlock/open
Panic alarm ...
