Maintenance Section
-109-
Fuel Specifications
General Fuel Information
Use only fuel as recommended in this section.
NOTICE
Fill the fuel tank at the end of each day of operation
to drive out moisture laden air and to prevent
condensation. Maintain a constant level near the
top of the day tank to avoid drawing moisture into
the tank as the level decreases. Do not fill the tank
to the top. Fuel expands as it gets warm and can
overflow.
Do not fill the fuel filters with fuel before installing
them. Contaminated fuel will cause accelerated
wear to the fuel system parts.
Drain the water and sediment from main fuel storage
tank before it is refilled. This will help prevent water
and/or sediment from being pumped from the fuel
storage tank into the engine fuel tank.
Diesel Specifications
Fuel Types
DOOSAN Diesel Engines have the ability to burn a wide
variety of fuels. These fuels are divided into two general
groups, preferred and permissible.
The Preferred Fuels provide maximum engine service
life and performance. They are distillate fuels. They are
commonly called diesel fuel, MDO diesel, furnace oil,
gas oil or kerosene (for cold weather operation).
Experience has proven that distillate fuels meeting the
following basic specifications will result in optimum
engine performance and durability.
DOOSAN strongly encourages the use of fuels that
meet the Preferred Fuels specification.
The permissible fuels are crude oils or blended fuels.
Use of these fuels can result in higher maintenance
costs and reduced engine service life.
Crude oil is used to describe oils/fuels that are not
refined and are in the original state as when pumped
from the ground. Certain types of crude oils can be
burned in DOOSAN Engines.
PREFERRED DISTILLATE FUEL
FOR DISEL ENGINES
Specifications Requirements*
Aromatics (AST D1319) 35% Max.
Ash (ASTM D482) 0.02% Weight Max.
Cetane Number
(ASTM D613)
35 Min. for 45 Max.
40 Min. for DI Engines
Cloud Point (ASTM D97)
Not Above Lowest Expected
Ambient Temperature
Gravity API (ASTM D287) 30 Min. and 45 Max.
Pour Point (ASTM D97)
6°C (10°F) Below
Ambient Min.
Sulfur (ASTM D2788,
D3605 orD1552)
0.5% Max.
(See Sulfur Topic)
Viscosity, Kinematic @
38°C(100°F)(ASTM D445)
20.0 cSt Max.
1.4 cSt Min.
Water & Sediment
(ASTM D1796)
0.01% Max.
*As delivered to fuel system
Fuel Sulfur Content
The percentage of sulfur in the fuel will affect the engine
oil recommendations. Fuel sulfur is chemically changed
during combustion to form both sulfurous and sulfuric
acid. These acids chemically attack metal surfaces and
cause corrosive wear.
Certain additives used in lubricating oils contain alkaline
compounds that are formulated to neutralize these acids.
The measure of this reserve alkalinity in lubricating oil is
known as its Total Base Number (TBN). TBN is
essential to neutralize the acids from combustion gases
and to minimize corrosive wear.
Any API classification performance of oil should have
sufficient TBN for fuels with less than 0.5% sulfur. For
fuels with 0.5% to 1.5% sulfur by weight, engine oil must
have a TBN of 20 times the percentage of fuel sulfur as
measured by the ASTM (American Society of Testing
Materials) D-2896 method. (ASTM D-2896 can normally
be found at your local technological society, library or
college).
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