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DIESEL FUEL, ENGINE OIL
AND ENGINE COOLANT
DIESEL FUEL
Use fuel that meets the requirements or specification
of Class 2-D (ASTM), and has a cetane rating of #45
or better.
.
Care Of The Fuel Supply
Use only clean diesel fuel! The clearance of the compo-
nents in your fuel injection pump is very critical; invisi-
ble dirt particles which might pass through the filter can
damage these finely finished parts. It is important to buy
clean fuel, and keep it clean. The best fuel can be ren-
dered unsatisfactory by careless handling or improper
storage facilities. To assure that the fuel going into the
tank for your engine's daily use is clean and pure, the
following practice is advisable:
Purchase a well-known brand of fuel.
Install and regularly service a good, visual-type filterl
water separator between the fuel tank and the engine.
Raycor 500 FG or 900 FG is a good example of such
a filter.
ENGINE OIL
Use a heavy duty engine oil with an API classification of
CF or CG4 or better. Change the engine oil after an
initial 50 hours of break-in operation, and every 200 hours
of operation thereafter. For recommended oil viscosity,
see the following chart:
Operating Temperature
Oil Viscosity
Above 68°F (20°C)
SAE 30 or 10W-30
41°-68°F 5-20°C)
SAE 20 or 10W-30
Below 41°F (5°C)
SAE 10W-30
A
CAUTION: 00 not allow two or more brands
of engine oil to mix. Each brand contains its own
additives; additives of different brands could react
in the mixture to produce properties harmful to
your engine.
6
ENGINE COOLANT
The use of an antifreeze mixture of 50/50 is recom-
mended for year-round use. Use antifreeze that is com-
patible with aluminium components, and never mix
different brands of antifreeze. Do not use straight water,
this can be detrimental to the cooling system compo-
nents.
NOTE:
Lookfor the new environmentally-friendly long
lasting antifreeze that is now available.
Antifreeze mixtures will protect against an unexpected
freeze and they are beneficial to the engine's cooling
system. They retard rust and add to the life of the circu-
lating pump seal.
ANTIFREEZE PROTECTION
Antifreeze concentration
23%
35%
50%
60%
Freezing Temperature
14°F
-4°F
-40°F
-58°F
(-5°C)
(-20°C)
(-40°C)
(-50°C)
COOLANT RECOVERY TANK
A coolant recovery tank kit is supplied with each
WESTERBEKE diesel engine. The purpose of this re-
covery tank is to allow for engine coolant expansion
and contraction during engine operation, without the loss
of coolant and without introducing air into the cooling
system.
COOLANT RECOVERY TANK
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