Volvo V70 Owner's Manual page 161

Coolant
Checking and topping up coolant
When topping up the coolant, follow the instructions on the packaging. It
is important that the mixture of coolant concentrate and water is correct
for the prevailing weather conditions. Never top up with water only. The
risk of freezing increases with both too little and too much coolant
concentrate.
See capacities and recommended grade for fluids and oils on page 170.
Important!
Always use coolant with anti-corrosion agent as recommended by
Volvo. New cars are filled with coolant that can withstand temperatu-
res down to approximately -35 °C.
Check the coolant regularly
The level should lie between the MIN and MAX marks on the expansion
tank. Top up with fluid when the level has fallen to the MIN mark.
Important!
The engine must only be run with a well-filled cooling system. High
temperatures can occur, causing a risk of damage (cracks) to the cylin-
der head.
WARNING!
The coolant may be very hot. If the coolant requires topping up when
the engine is at operating temperature, unscrew the expansion tank cap
slowly to gently release the overpressure.
160