Volvo S90 2019 Owner's Manual page 609

Screw off the cap in the plastic cover.
Screw off the cap and top up with coolant if
necessary. The coolant level must not exceed
the yellow MAX mark inside the expansion
tank.
Reinstall the parts in reverse order.
Coolant expansion tank, right-hand drive car.
Grip the hatch's handle and lift/jiggle the
hatch from the plastic cover.
Screw off the cap and top up with coolant if
necessary. The coolant level must not exceed
the yellow MAX mark inside the expansion
tank.
Reinstall the parts in reverse order.
MAINTENANCE AND SERVICE
IMPORTANT
Harmful if ingested. May cause organ
•
(kidney) damage.
Use ready-mixed coolant as recom-
•
mended by Volvo. If concentrated liquid is
used, make sure that the ratio is 50 %
coolant to 50 % water of an approved
quality.
Do not mix different coolants.
•
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. 603)
•
Coolant — specifications (p. 664)
•
607