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:
Under the Hood
A 2.4-liter inline-five-cylinder produces 168 horsepower in the 2.4i.
High-performance T5 editions employ a turbocharged 2.5-liter
inline-five-cylinder that now generates 227 hp (up from 218 hp) a ...
Under the glove compartment
boxes.
1. Press the cover's lock and fold it up.
2. The fuses are accessible.
Positions-fuse box A
Positions-fuse box B
...
Security
The Volvo S80 is fitted as standard with a wide range of features designed to
protect occupants from burglary, theft and assault. An electronic immobiliser
makes it impossible to start the car wit ...
