Demanding driving
In demanding driving conditions, such as operating the vehicle in hot weather, towing a trailer, or driving for extended periods at higher altitudes than normal, it may be advisable to switch to higher octane fuel (91 or higher) or to change gasoline brands to fully utilize your engine's capacity, and for the smoothest possible operation.
NOTE
When switching to higher octane fuel or changing gasoline brands, it may be necessary to fill the tank more than once before a difference in engine operation is noticeable.
See also:
Engine and cooling system
Under special conditions, for example when driving in hilly terrain, extreme
heat or with heavy loads, there is a risk that the engine and cooling system will
overheat. Proceed as follows to avoid ...
Audio volume and automatic volume control
The infotainment system compensates for disrupting noises in the passenger compartment
by increasing the volume according to the speed of the vehicle. The level of sound
compensation can be set at ...
2005 Volvo S40 Review
Volvo's compact S40 sedan looks great and has a nicely appointed interior.
The fact that it's available with a turbocharged engine and all-wheel drive only
heightens its appeal.
The S40 has two ...