Volvo XC90 TWIN ENGINE Owner's Manual page 613

Coolant expansion tank.
Lift off the rubber strip by pressing it inward
in the engine compartment.
Detach the flap in the plastic cover by folding
out the release catch and turning the flap
upward.
Screw off the cap and top up with coolant if
necessary. The coolant level must lie
between the MIN and MAX marks on the
expansion tank.
MAINTENANCE AND SERVICE
IMPORTANT
•
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.
•
Make sure that the coolant mixture is
50% water and 50% coolant.
•
Always use coolant with anti-corrosion
agent as recommended by Volvo.
•
Only new coolant should be used when
replacing major cooling system compo-
nents to ensure the system has sufficient
corrosion protection.
•
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.
•
A high content of chlorine, chlorides and
other salts may cause corrosion in the
cooling system.
Related information
•
Engine compartment overview (p. 607)
•
Coolant — specifications (p. 661)
611