Due to poor oxidation stability and other potential
issues, it is strongly recommended that engines with
limited operational time either not use B20 biodiesel
blends or, while accepting some risk, limit biodiesel
blend to a maximum of B5. Examples of applications
that should limit the use of biodiesel are the following:
Standby Generator sets and certain emergency
vehicles.
Perkins strongly recommended that seasonally
operated engines have the fuel systems, including
fuel tanks, flashed with conventional diesel fuel
before prolonged shutdown periods. An example of
an application that should seasonally flush the fuel
system is a combine harvester.
Microbial contamination and growth can cause
corrosion in the fuel system and premature plugging
of the fuel filter. Consult your supplier of fuel for
assistance in selecting appropriate anti-microbial
additive.
Water accelerates microbial contamination and
growth. When biodiesel is compared to distillate
fuels, water is naturally more likely to exist in the
biodiesel. It is therefore essential to check frequently
and if necessary, drain the water separator.
Materials such as brass, bronze, copper, lead, tin,
and zinc accelerate the oxidation process of the
biodiesel fuel. The oxidation process can cause
deposits formation therefore these materials must not
be used for fuel tanks and fuel lines.
Fuel for Cold Weather Operation
The European standard “EN590” contains climate
dependant requirements and a range of options. The
options can be applied differently in each country.
There are five classes that are given to arctic
climates and severe winter climates. 0, 1, 2, 3 and 4.
Fuel that complies with “EN590 ” CLASS 4 can be
used at temperatures as low as −44 °C (−47.2 °F).
Refer to “EN590” for a detailed discretion of the
physical properties of the fuel.
The diesel fuel “ASTM D975 1-D” used in the United
States of America may be used in very cold
temperatures that are below −18 °C (−0.4 °F).
Aftermarket Fuel Additives
Supplemental diesel fuel additives are not generally
recommended. This recommendation is due to
potential damage to the fuel system or the engine.
Your fuel supplier or the fuel manufacturer will add
the appropriate supplemental diesel fuel additives.
Perkins recognizes the fact that additives may be
required in some special circumstances. Contact
your fuel supplier for those circumstances when fuel
additives are required. Your fuel supplier can
recommend the appropriate fuel additive and the
correct level of treatment.
Note: For the best results, your fuel supplier should
treat the fuel when additives are required. The
treated fuel must meet the requirements that are
stated in table 8 .
Perkins Diesel Fuel System Cleaner
Perkins T400012 Fuel Cleaner is the only fuel
cleaner that is recommended by Perkins.
If biodiesel or biodiesel blends of fuel are to be used,
Perkins require the use of Perkins fuel cleaner. The
use of the fuel is in order to remove deposits within
the fuel system that is created with the use of
biodiesel. For more information on the use of
biodiesel and biodiesel blends refer to “Group 3
Biodiesel Fuel”.
Perkins fuel cleaner will remove deposits that can
form in the fuel system with the use of biodiesel and
biodiesel blends. These deposits can create a loss of
power and engine performance.
Once the fuel cleaner has been added to the fuel, the
deposits within the fuel system are removed after 30
hours of engine operation. For maximum results,
continue to use the fuel cleaner for up to 80 hours.
Perkins fuel cleaner can be used on an on-going
basis with no adverse impact on engine or fuel
system durability.
Details instruction on the rate of which the fuel
cleaner must be use are on the container.
Note: Perkins fuel cleaner is compatible with existing
and U.S. EPA Tier 3 nonroad certified diesel engine
emission control catalysts and particulate filters.
Perkins fuel system cleaner contains less than 15
ppm of sulfur and is acceptable for use with LSD fuel.
Service Intervals for Biodiesel and
High sulfur Fuels.
Table 9
B20 Biodiesel Engine Service
First 50 hours fuel filter change
Every 250 hours fuel filter change
Required T400012 Fuel Cleaner
SEBU8731-04
61
Maintenance Section
Fuel Specification
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