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:
Automatic Locking Retractor/Emergency Locking Retractor (ALR/ELR)
To make child seat installation easier, each
seat belt (except for the driver's belt) is equipped
with a locking mechanism to help keep the
seat belt taut.
When attaching the seat belt to a child
...
Three-way catalytic converter
• Keep your engine properly tuned. Certain
engine malfunctions, particularly involving
the electrical, fuel or distributor ignition
systems, may cause unusually high threeway
catalytic convert ...
Disabling the passenger's side front airbag
Occupant Weight Sensor (OWS) indicator light
Volvo recommends that ALL occupants (adults and children) shorter than 4 feet
7 inches (140 cm) be seated in the back seat of any vehicle with a front ...
