Note: Engines that are manufactured by Perkins are
certified by use of the prescribed Environmental
Protection Agency (EPA) and European Certification
fuels. Perkins does not certify engines on any other
fuel. The user of the engine has the responsibility of
using the correct fuel that is recommended by the
manufacturer and allowed by the EPA and other
appropriate regulatory agencies.
Specification Requirements
The neat biodiesel must conform to the latest
“EN14214 or ASTM D6751” (in the USA). The
biodiesel can only be blended in mixture of up to 20%
by volume in acceptable mineral diesel fuel meeting
latest edition of “EN590 or ASTM D975 S15”
designation.
In United States Biodiesel blends of B6 to B20 must
meet the requirements listed in the latest edition of
“ASTM D7467” (B6 to B20) and must be of an API
gravity of 30-45.
In North America biodiesel and biodiesel blends must
be purchased from the BQ-9000 accredited
producers and BQ-9000 certified distributors.
In other areas of the world, the use of biodiesel that is
BQ-9000 accredited and certified, or that is
accredited and certified by a comparable biodiesel
quality body to meet similar biodiesel quality
standards is required.
Engine Service Requirements
Aggressive properties of biodiesel fuel may cause
debris in the fuel tank and fuel lines. The aggressive
properties of biodiesel will clean the fuel tank and fuel
lines. This cleaning of the fuel system can
prematurely block of the fuel filters. Perkins
recommend that after the initial usage of B20
biodiesel blended fuel the fuel filters must be
replaced at 50 hours.
Glycerides present in biodiesel fuel will also cause
fuel filters to become blocked more quickly. Therefore
the regular service interval should be reduced to 250
hours.
When biodiesel fuel is used, crank case oil and
aftertreatment systems may be influenced. This
influence is due to the chemical composition and
characteristics of biodiesel fuel, such as density and
volatility, and to chemical contaminants that can be
present in this fuel, such as alkali and alkaline metals
(sodium, potassium, calcium, and magnesium).
• Crankcase oil fuel dilution can be higher when
biodiesel or biodiesel blends are used. This
increased level of fuel dilution when using
biodiesel or biodiesel blends is related to the
typically lower volatility of biodiesel. In-cylinder
emissions control strategies utilized in many of the
industrial latest engine designs may lead to a
higher level of biodiesel concentration in the
sump. The long-term effect of biodiesel
concentration in crankcase oil is currently
unknown.
• Perkins recommend the use of oil analysis in
order to check the quality of the engine oil if
biodiesel fuel is used. Ensure that the level of
biodiesel in the fuel is noted when the oil sample is
taken.
Performance Related Issues
Due to the lower energy content than the standard
distillate fuel B20 will cause a power loss in order of 2
to 4 percent. In addition, over time the power may
deteriorate further due to deposits in the fuel
injectors.
Biodiesel and biodiesel blends are known to cause
an increase in fuel system deposits, most significant
of which are deposits within the fuel injector. These
deposits can cause a loss in power due to restricted
or modified fuel injection or cause other functional
issues associated with these deposits.
Note: Perkins T400012 Fuel Cleaner is most
effective in cleaning and preventing the formation of
deposits. Perkins Diesel Fuel Conditioner helps to
limit deposit issues by improving the stability of
biodiesel and biodiesel blends. For more information
refer to “Perkins Diesel Fuel System Cleaner, and
Perkins”.
Biodiesel fuel contains metal contaminants (sodium,
potassium, calcium, and/or magnesium) that form
ash products upon combustion in the diesel engine.
The ash can have an impact on the life and
performance of aftertreatment emissions control
devices and can accumulate in DPF. The ash
accumulation may cause the need for more frequent
ash service intervals and cause loss of performance
General Requirements
Biodiesel has poor oxidation stability, which can
result in long-term problems in the storage of
biodiesel. Biodiesel fuel should be used within 6
months of manufacture. Equipment should not be
stored with the B20 biodiesel blends in the fuel
system for longer than 3 months.
60
SEBU8731-04
Maintenance Section
Fuel Specification
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