Volvo XC90 Owner's Manual page 144

06 Starting and driving
General
NOTE
Avoid driving on steep slopes if the fuel
level is low. The catalytic converter could
be damaged if the engine does not receive
enough fuel. When driving on extremely
steep slopes, make sure the tank is more
than half full to avoid the risk of break-
down.
Slippery driving conditions
Practise driving on slippery surfaces under
controlled conditions to learn how the car
reacts.
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