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:
Design Concept
The Volvo S40 is a tribute to Volvo's talented and multi-cultural design
teams in Gothenburg, Barcelona and California, who have captured the premium
values of a contemporary Volvo saloon in a com ...
Low battery voltage
If the battery voltage is too low, the parking
brake cannot be applied or released. Connect
an auxiliary battery if the battery voltage is too
low, see page 114. ...
Using seat belts
Adjusting the seat belt
Volvo, the inventor of the three-point seat belt,
urges you and all occupants of your vehicle to
wear seat belts and ensure that children are
properly restrained, using a ...
