Cooling System
The engine's internal cooling system makes sure the
engine works at the right temperature. It is a closed
system that must always be filled with a mixture of
concentrated coolant and water in order to protect the
engine against internal corrosion, cavitation and bursts
due to freezing.
IMPORTANT!
Coolant of a suitable chemical composition must be
used all year round. This also applies in areas where
there is never any risk of freezing, to provide the engine
with full corrosion protection.
The corrosion protection additives become less effec-
tive over time, which means that the coolant must be
changed at regular intervals; refer to the
Maintenance
Schedule
. The cooling system must be flushed when-
ever the coolant is changed; refer to the
Volvo Penta engines are delivered with either “Volvo
Penta Coolant” (green) or “Volvo Penta Coolant VCS”
(yellow); both are available as concentrates and
“Ready Mixed”.
Volvo Penta coolants have been prepared to work best
with Volvo Penta engines and offer excellent protection
against corrosion, cavitation damage, and bursts due
to freezing. Only coolants of this quality are adapted
to, and approved by, Volvo Penta.
We recommend that the coolant supplied with the
engine on delivery be used. Future warranty claims
related to engine and accessories may be declined if
an unsuitable coolant has been used, or if the instruc-
tions for coolant mixture have not been followed.
The use of anti-corrosion agents alone is not permitted
in Volvo Penta engines. Never use water alone as a
substitute for coolant.
IMPORTANT!
•
The two types of Volvo Penta coolant may
never
be
mixed with each other as this will affect the anti-cor-
rosion properties.
•
Coolant filters may not be used together with Volvo
Penta Coolant VCS.
•
Engines using yellow Volvo Penta Coolant VCS
must have a yellow decal with the text VOLVO
COOLANT VCS on the expansion tank.
Maintenance
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