MAINTENANCE AND SERVICE
369
Coolant - level
The coolant cools the internal combustion
engine to the correct operating temperature. The
heat that is transferred from the engine to the
coolant can be used to heat the passenger com-
partment.
Checking the level
The coolant level must lie between the MIN and
MAX marks on the expansion tank. If the cooling
system is not filled sufficiently, excessively high
temperatures could occur, causing a risk of dam-
age to the engine.
NOTE
Check the coolant level regularly when the
engine is cold.
Filling
When topping up the coolant, follow the instruc-
tions on the packaging. Never top up with water
only. The risk of freezing increases with both too
little and too much coolant concentrate.
If there is coolant under the car, if there is cool-
ant smoke, or if more than 2 litres have been
filled, always call for recovery to avoid the risk of
engine damage when starting due to a defective
cooling system.
WARNING
Coolant can be very hot. If the coolant
requires topping up when the engine is at
operating temperature, unscrew the expan-
sion tank cap slowly to gently release the
overpressure.
IMPORTANT
•
A high content of chlorine, chlorides and
other salts may cause corrosion in the
cooling system.
•
Always use coolant with anti-corrosion
agent as recommended by Volvo.
•
Ensure that the coolant mixture is 50%
water and 50% coolant.
•
Mix the coolant with approved quality
water. In the event of any doubt about
water quality, used ready-mixed coolant in
accordance with Volvo recommendations.
•
When changing coolant/replacing cool-
ing system components, flush the cooling
system clean with approved quality water
or flush with ready-mixed coolant.
•
The engine must only be run with a well-
filled cooling system. Otherwise, tempera-
tures that are too high may occur result-
ing in the risk of damage (cracks) in the
cylinder head.
For capacities and for standards regarding water
quality; see Coolant - grade and volume (p. 424).
