operators_manual

meet emission regulations and to prevent
damage to the engine and exhaust system.
The use of other grades of diesel fuels
other than ULSD fuel will be considered a
use of incorrect fuel for the engine.
PACCAR is not responsible for failures
caused by the use of incorrect fuel, oil or
DEF or by water, dirt or other containments
in the fuel or DEF
.
Warranty and the Use of
Biodiesel Fuel
Biodiesel information and warranty
precautions.
PACCAR Inc. approves the use of
biodiesel fuel blends from 6 to 20 percent
by volume in diesel fuel providing that the
following conditions are met:
• The biodiesel used in the blend
meets ASTM Standard D6751 or
EN 14214 specifications.
• The biodiesel used in the blend is
sourced from a BQ-9000
Accredited Producer.
• The finished blend meets the fuel
properties of the ASTM Standard
D975 (up to B5 blend) or D7467
(B6 to B20 blend).
• The engine oil and oil filter are
changed per the modified
schedule. See the Engine
Preventative Maintenance
Schedule.
• The fuel filter is changed every
25,000 miles/40,000 km.
The use of approved biodiesel fuel does
not affect the PACCAR engine warranty.
Failures caused by the use of non-
approved biodiesel fuels or other fuel
additives that are of unacceptable quality
or do not meet specified industry standards
are not considered as defects of parts or
workmanship by PACCAR and therefore
will not be covered by the PACCAR engine
warranty.
PACCAR recommends that customers
intending to use biodiesel blends become
familiar with the additional handling
considerations of these fuels such as
ageing, metal compatibility and tendency to
absorb water. Please reference the fuel
supplier’s technical information or industry
guidelines such as the American Trucking
Association Truck Maintenance Council
document RP 357.
In particular, operators should be aware
that biodiesel blends are more prone to
cold flow (gelling) and filter plugging issues
compared to conventional diesel fuel. If
vehicles are expected to be operated in
temperatures below freezing, care should
be taken to ensure that both the biodiesel
fuel used and the appropriate vehicle fuel
system accessory heaters are utilized.
Operators should also be aware that
biodiesel energy content (by volume) is
lower than diesel which can reduce fuel
economy by up to two percent.
Recommendations to
Avoid Fuel Gelling
Information to prevent fuel gelling.
• Use appropriate fuel grade/blend
for conditions.
• Specify vehicle with proper cold
weather equipment (12v electric
pre-heater, fuel blending valve, fuel
coolant heater, 12v line heaters
and tank heaters).
PACCAR does not recommend the use of
fuel additives, however, should a customer
decide there is a need for temporary use of
a winter fuel additive, PACCAR offers the
following guidance:
• Use an industry known, high quality
product (EPA approved).
ENGINE MAINTENANCE - Warranty and the Use of Biodiesel Fuel
48 Y53-1181-1K1 (08/2018)
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