Volvo S90 2019 Owner's Manual page 414

STARTING AND DRIVING
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WARNING
Never turn off the engine while the vehicle
is moving, e.g. when driving downhill. This
deactivates certain important systems
such as power steering and brakes.
Other factors that decrease fuel
consumption
Dirty air cleaner.
•
Dirty engine oil and clogged oil filter.
•
Incorrect front-end alignment.
•
Incorrect wheel alignment.
•
Some of the above items and others are
checked as part of Volvo's standard mainte-
nance schedule.
Related information
Drive-E ‒ purer driving pleasure (p. 28)
•
Eco drive mode (p. 401)
•
Checking tire pressure (p. 507)
•
412
Preparing for a long trip
It is important to have the vehicle's systems
and equipment checked carefully before driv-
ing long distances.
Check that
the engine is running properly and that
•
fuel consumption is normal
there are no leaks (fuel, oil or other fluid)
•
the brake pedal is functioning properly
•
all lights are working ‒ adjust the head-
•
light height if the vehicle is carrying a
heavy load
tire tread depth and air pressure are at
•
correct levels. Change to snow tires when
driving in areas where there is a risk of
snowy or icy roads
the start battery is sufficiently charged
•
the wiper blades are in good condition
•
Related information
Checking tire pressure (p. 507)
•
Filling washer fluid (p. 607)
•
Winter driving (p. 412)
•
Economical driving (p. 411)
•
Vehicle modem settings (p. 483)
•
Loading recommendations (p. 538)
•
Pilot Assist* (p. 285)
•
Tire sealing system (p. 523)
•
Winter driving
It is important to check the vehicle before
driving in cold/snowy conditions to make
sure it can be driven safely.
Before the cold season arrives:
Make sure the engine coolant contains
•
50% antifreeze. This mixture helps pro-
tect the engine from frost erosion down to
approx. –35 °C (–31 °F). Do not mix dif-
ferent types of antifreeze as this could
pose a health risk.
Keep the fuel tank well filled to prevent
•
condensation from forming.
Check the viscosity of the engine oil. Oil
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with low viscosity (thinner oil) improves
cold-weather starting and reduces fuel
consumption when driving with a cold
engine.
CAUTION
Low-viscosity oil should not be used with
hard driving or in hot weather.
Check the condition and charge level of
•
the start battery. Cold weather places
greater demands on the start battery and
reduces its capacity.
Use washer fluid containing antifreeze to
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help prevent ice from forming in the
washer fluid reservoir.
* Option/accessory.