2003 Volvo S60 Owner's Manual - Page 91
2003 Volvo S60 Manual
Page 91 highlights
During cold weather, the reservoir should be filled with windshield washer solvent containing antifreeze. Coolant reservoir Changing 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). CAUTION: The cooling system must always be kept filled to the correct level. 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 car cools. If it is necessary to top up the coolant when the engine is warm, unscrew the expansion tank cap slowly so that the overpressure dissipates. pg. 126 Maintenance and service Oils and fluids (Contd) Clutch and brake fluid reservoir