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.
P0012894
Maintenance
47706149 09-2015 © AB VOLVO PENTA
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Summary of Contents for V8-225
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