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:
Safety Features
The S80 excels at safety. Before the little bubble above your head fills with
the word "Duh," let me add that this Volvo has some breakthrough safety gizmos
we hadn't seen until very rec ...
Top tether anchors
Top tether anchorage points
Your vehicle is equipped with child restraint top
tether anchorages in all second row seat positions
(second-row seats only in 7-seat models).
Using the top tether an ...
Switching off the engine
With the engine running, press the START/ STOP ENGINE button.
If the gear selector is not in the P position or if the vehicle is moving, press
the button twice or press and hold it in until the eng ...
