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 Drag Control (EDC)
EDC helps keep the engine running if the
wheels show a tendency to lock, e.g., when
shifting down in the Geartronic manual shifting
mode or while using the engine's braking function
on a slipp ...
Air vents in the door pillars
A - Closed
B - Open
C - Horizontal airflow
D - Vertical airflow
Direct the outer air vents toward the side windows to defrost.
Direct the vents into the passenger compartment to help maintain t ...
Minimum octane
Typical pump octane label
Volvo recommends premium fuel for best performance,
but using 87 octane or above will
not affect engine reliability.
Volvo engines are designed to achieve rated
hor ...
