The lubricity has particular significance to the current
low viscosity fuel, low sulfur fuel and low aromatic
fossil fuel. These fuels are made in order to meet
stringent exhaust emissions. A test method for
measuring the lubricity of diesel fuels has been
developed and the test is based on the HFRR
method that is operated at 60 °C (140 °F). Refer to
“ISO 12156 part 1 and CEC document F06-A-96” for
the test method.
Lubricity wear scar diameter of 0.46 mm
(0.0181 inch) MUST NOT be exceeded. The fuel
lubricity test must be performed on a HFRR,
operated at 60 °C (140 °F). Refer to “ISO 12156-1 ”.
Fuel additives can enhance the lubricity of a fuel.
Contact your fuel supplier for those circumstances
when fuel additives are required. Your fuel supplier
can make recommendations for additives to use and
for the proper level of treatment. Refer to “Fuel
Additive” for more information.
Distillation
This is an indication of the mixture of different
hydrocarbons in the fuel. A high ratio of light weight
hydrocarbons can affect the characteristics of
combustion.
Classification of the Fuels
Diesel engines have the ability to burn a wide variety
of fuels. These fuels are divided into four general
groups: Ref to table 27
Table 27
Fuel Groups Classification
Group 1 Preferred fuels Full life of the
Product
Group 2 Permissible fuels These fuels MAY
cause reduced en-
gine life and
performance
Group 3 Aviation fuels These fuels WILL
cause reduced en-
gine life and
performance
Group 4 Biodiesel
Group 1 Specifications (Preferred Fuels)
This group of fuel specifications is considered
acceptable:
• EN590 DERV Grade A, B, C, E, F, Class, 0, 1, 2, 3
and 4
• “ASTM D975”, Grade 2D S15 and Grade 2D S500
• “JIS K2204 Grades 1,2,3 and Special Grade 3”
This grade of fuel must meet the minimum lubricity
requirements that are stated in table 24 .
• “BS2869 Class A2” Off-Highway Gas Oil Red
Diesel
Note: BS2869 can only be used if the sulfur level
meets the specifications that are listed in tables 25
and 26 . An analysis of a sample of fuel must be
conducted in order to check the sulfur level.
Note: The use of LSD fuel and the use of ULSD fuel
is acceptable provided that the fuels meet the
minimum requirements that are stated in tables 24 ,
25 and 26 . The lubricity of these fuels must not
exceed wear scar diameter of 0.46 mm
(0.0181 inch). The lubricity test must be performed
on a HFRR, operated at 60 °C (140 °F). Refer to
“ISO 12156-1 ”. By using the test methods “ASTM
D5453, ASTM D2622, or ISO 20846 ISO 20884”, the
content of sulfur in LSD fuel must be below 500 PPM
0.05%. By using the test methods “ASTM D5453,
ASTM D2622, or ISO 20846 ISO 20884”, the content
of sulfur in ULSD fuel must be below 15 PPM
0.0015%.
Group 2 Specifications (Permissible
Fuels)
This group of fuel specifications is considered
acceptable, but these fuels MAY reduce the engine
life and performance.
• “ASTM D975”, Grade 1D S15 and Grade 1D S500
• “JP7 (MIL-T-38219)”
• “NATO F63”
Note: JP7 and NATO F63 can only be used if the
sulfur level meets the specifications that are listed in
tables 25 and 26 . An analysis of a sample of fuel
must be conducted in order to check the sulfur level.
Group 3 Specifications (Aviation Fuels)
This group of fuel specification must be used only
with the appropriate fuel additive. This fuel WILL
reduce engine life and performance.
• “NATO F34 (MIL-DTL-83133E)”
• “NATO F35 (MIL-DTL-83133E)”
• “NATO JP8 (MIL-DTL-83133E)”
• “NATO F-44 (MIL-DTL-5624U)”
• “NATO JP5 (MIL-DTL-5624U)”
• “Jet A (ASTM D1655)”
• “Jet A1 (ASTM D1655)”
SEBU8311-09
47
Maintenance Section
Fuel Specification
To Next Page
Loading...
