operators_manual

Table Of Contents
CAUTION
Unapproved fuel can reduce economy
or possibly damage
fuel system com-
ponents. Unapproved fuels typically do
not have enough lubricity elements in
the fuel to properly lubricate the fuel
injection system. Be sure you follow
the fuel recommendations as indicated
in this section of the manual. Failure to
comply may result in equipment or
property damage.
CAUTION
Using diesel fuels blended with lubri-
cants may cause
damage to your ex-
haust aftertreatment system. Service
intervals for aftertreatment systems
will be reduced. DO NOT use diesel
fuel blended with lubricating oil in en-
gines equipped with an aftertreatment
system. Failure to comply may result
in equipment or property damage.
CAUTION
DO NOT use high-sulfur diesel fuel as
it will damage
the exhaust aftertreat-
ment system. Also, the engine will not
meet emission regulations. Use only
ultra-low-sulfur diesel (ULSD) fuel.
Failure to comply may result in equip-
ment or property damage.
CAUTION
If ultra-low-sulfur diesel (ULSD) fuel is
not used, the
engine may not meet
emission regulations, and damage
may occur to the exhaust aftertreat-
ment system. The use of high-sulfur
diesel fuel will damage the exhaust af-
tertreatment system and impact the
engine emission. ULSD fuel is re-
quired for correct operation of the af-
tertreatment. The engine has been op-
timized for use with an aftertreatment
system together with ULSD fuel to
meet the 2013 U.S. Environmental
Protection Agency regulations. Failure
to comply may result in equipment or
property damage.
NOTE
PACCAR recommends that the cetane
number of diesel
fuel be a minimum of
45 for engines that are expected to op-
erate at temperatures below 32ºF
(0ºC) and a minimum of 42 for engines
that are operated at temperatures
above 32ºF (0ºC).
Using diesel fuel with a lower-than-
recommended cetane number can cause
hard starting instability, and excessive
white smoke. To maintain satisfactory
operation at low ambient temperatures, it is
important to specify diesel fuel of the
correct cetane number
.
PACCAR requires all permissible fuels to
have adequate fuel lubricity. Lubricity can
be determined by ASTM, specification
D6079, ISO 12156, High Frequency
Reciprocating Rig (HFRR) in which the fuel
must have a wear scar diameter of 0.02 in.
(0.5 mm) or less.
The use of Ultra-low-sulfer-diesel (ULSD)
fuel is required for this engine in order to
ENGINE MAINTENANCE - Fuel Recommendations
Y53-1181-1K1 (08/2018) 47
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