20
Fuel, Oils, Coolant
Oil for servo unit system, hydraulic pump
(accessory)
ATF oil* should be used in the servo unit system.
*ATF = Automatic Transmission Fluid (oil for automatic gear-
boxes).
Coolant
The engine’s internal cooling system (freshwater sys-
tem) is filled with a mixture of freshwater and addi-
tives. NOTE! Never use freshwater without additives.
The following recommendations should be followed
to prevent frost and corrosion damage to your en-
gine:
When there is a chance of freezing
Use a mixture of 50% Volvo Penta antifreeze (glycol)
and 50% pure water (as neutral as possible). This
mixture will protect against freezing to a tempera-
ture of approx. –40°C (–40°F) and should be
used all year round.
Note: There should be at least 40% antifreeze in the
system for complete protection against corrosion.
NOTE! Glycol is harmful to health (danger-
ous if ingested).
When there is no chance of freezing
When there is no risk of freezing, water with add-
ed Volvo Penta anti-corrosion agent* (P/N
1141526-2) may be used unless an anti-freeze mix-
ture is used all year round. Mixture ratio = 1:30.
See the instructions on page 55 for topping up the
coolant. Warm up the engine after filling to allow the
additive to work as efficiently as possible.
NOTE! Anti-corrosive agents are harmful to
health (danger if ingested).
*Note: Never mix anti-freeze (glycol) and anti-corrosive
agents. The two combined can produce foam and drastically
reduce the coolant’s effectiveness.
Replacing the coolant
The coolant should be replaced and the system
flushed at least once a year. See maintenance
schedule.
Volvo Penta products
See also under the heading “Accessories” on page
101.
Diesel fuels
The composition of the fuel is vital for operation of
the engine, its service life, and emissions. To meet
the performance specified and to run your boat
cleanly and quietly, it is vital that you use fuel as rec-
ommended below.
Fuel specifications
The fuel must be approved according to national and
international standards for commercial fuels, for ex-
ample:
– EN 590 (With environmental and sub-zero temper-
ature specifications according to national require-
ments)
– ASTM D 975 No. 1-D and 2-D
– JIS KK 2204
Sulfur content: According to current legislation in
the respective country.
Use of fuel with an extremely low sulfur content (Ur-
ban Diesel fuel in Sweden and City Diesel in Finland)
can result in a reduction in output of approx. 5% and
increase in fuel consumption of approx. 2–3%.
Lubricating oil, engine
A lubricating oil of a quality as shown in the table
below should be used:
Designation Standard
VDS* Volvo Drain Specification
CD, CE API (American Petroleum Institute)
MIL-L-2104D US Government’s Military Spec.
*Note! A VDS oil must be used if there is to be a long period
between oil changes. See also the maintenance schedule
and “Technical Data”.
We do not advise that you run on an oil of a quality
which does not meet the above requirements. This is
a poor solution with respect to both economy and op-
erating safety.
For viscosity and capacities, see “Technical Data” on
page 96.
Lubricating oil, reverse gear
For the reverse gear, a single grade oil of quality
CC, CD or CE according to the API system should
be used. Oil according to the MIL-L-2104D standard
may also be used.
For viscosity and capacities, see “Technical Data” on
pages 98–99.
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