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:
Steep inclines and/or heavy loads
ACC is primarily intended for use on fairly level
roads. The system may have difficulty maintaining
the correct distance to a vehicle ahead
on steep inclines, if the vehicle is carrying a
heav ...
Heated oxygen sensors
The heated oxygen sensors monitor the oxygen
content of the exhaust gases. Readings
are fed into a control module that continuously
monitors engine functions and controls fuel
injection. The r ...
Vehicle Overview
Volvo's small wagon, the V50, comes in 2.4i and T5 trim levels, the latter
offered in all- as well as front-wheel drive. A few years past a full redesign,
the V50 and its S40 sedan sister have bee ...
