Volvo S40 Owner's Manual page 202

2007 Volvo S40
The washer fluid reservoir is located in the engine compartment and holds approximately 6.8 US qts (6.5 liters). During cold weather, the
reservoir should be filled with windshield washer solvent containing antifreeze.
Coolant
Normally, the coolant does not need to be changed. If the system must be drained, consult your Volvo retailer.
NOTE
Do not top off with water only. This reduces the rust-protective and antifreeze qualities of the coolant and has a lower boiling point. It can also
cause damage to the cooling system if it should freeze. Top off with Volvo Genuine Coolant/Antifreeze only (a 50/50 mix of water and
antifreeze).
191
09 Maintenance and servicing
Fluids
CAUTION
The cooling system must always be kept filled to the correct level, and the level must be between the MIN and MAX marks. If it is not kept
filled, there can be high local temperatures in the engine which could result in damage. Different types of antifreeze/coolant may not be mixed.
Check coolant regularly!
WARNING
Never remove the radiator cap while the engine is warm. Wait until the vehicle cools. If it is necessary to top off the coolant when the engine is
warm, unscrew the expansion tank cap slowly so that the overpressure dissipates.
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