coolant type that came in the engine.
Do not
mix cool-
ant types.
NOTICE!
Do not use other coolant types such as tra-
ditional green ethylene glycol, propylene glycol (pink),
OAT, or HOAT coolants. Mixing coolants can damage
the cooling system.
Volvo Penta offers pre-mix, ready-to-use containers of
the
VCS
coolant. If using full strength antifreeze, use
a 50/50 mix of antifreeze and distilled water.
Checking Engine Coolant for Freeze
Protection
NOTICE!
Engine damage is possible during freezing
temperatures if coolant mix is not correct .
If the boat/engine will be stored or used in an area with
freezing temperatures, the coolant mixture must be
checked to insure it has adequate temperature protec-
tion properties. As part of winterization, Volvo Penta
highly recommends that the coolant be checked for
correct freeze protection. Use a coolant test kit (hydro-
meter) to check a sample of the coolant. The temper-
ature indicated by the hydrometer should be at least
10º F (6°C) lower than the lowest expected tempera-
ture for the area where the engine will be stored. Check
the coolant at ambient temperature, do not check hot
coolant (safety and inaccurate reading concerns).
The coolant solution can be strengthened to protect at
lower temperatures by draining half a gallon of coolant
from the engine and replacing with a half gallon of full
strength antifreeze solution. Run engine for 10 minutes
to ensure proper mixing of solution and recheck for
level of protection. Repeat, if necessary, until the indi-
cated level of protection is at least 10° F (6°C) lower
than the projected lowest temperature for the local
area.
See your Volvo Penta dealer for assistance with this
test.
Replacing Heat Exchanger Anodes
A sacrificial anode protects the seawater side of the
heat exchanger on freshwater cooled engines. The
anode should be checked at least once per year, more
frequently for boats with high usage.
The anode is mounted to the side of the heat
exchange. Remove the anode for inspection, if eroded
more than 30% the anode should be replaced.
Anodes purchased from your Volvo Penta dealer meet
the highest specifications for material composition and
purity. Some aftermarket anodes may not meet these
quality specifications.
To reinstall the anode, turn in until hand tight, then
tighten a quarter turn using a wrench.
P0012894
P0018339
Maintenance
47706041 07-2014 © AB VOLVO PENTA
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