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:
Locks
The alarm indicator light on the dashboard will stop flashing to indicate that
the alarm is not monitoring the entire vehicle. The accessory movement and inclination
sensors will be automatically ...
Introduction
Your vehicle is equipped with tires according to the vehicle's tire information
placard on the B-pillar (the structural member at the side of the vehicle, at the
rear of the driver's door ...
Unleaded fuel
Each Volvo has a three-way catalytic converter
and must use only unleaded gasoline. U.S. and
Canadian regulations require that pumps delivering
unleaded gasoline be labeled "UNLEADED". ...
