necessary to achieve the engine's design
life. If other brands are substituted, the
purchaser should ensure the filter
specification meet or exceed the
Fleetguard specifications.
CAUTION
Use of non-genuine PACCAR oil filters
can cause severe engine damage.
Engine Lubricating Oil
Recommendations and
Specifications
A major factor in maintaining engine
performance and durability is the proper
use of quality engine lubricating oils used
in conjunction with the appropriate oil drain
and filter change intervals. Attempting to
extend the oil and filter change interval
beyond the manufacturer's
recommendations may decrease engine
life due to factors such as corrosion,
deposits, and wear.
See "Engine Lubrication and Filter
Intervals" to determine which oil drain
interval to use for an application.
NOTE
It is the operator’s responsibility to fol-
low these recommendations to ensure
that the engine warranty is not affect-
ed.
The primary PACCAR recommendation is
for the use of SAE 10W-30 API CK-4 or
CJ-4 multigrade lubricating oil for normal
operation at ambient temperatures above
5°F (-15°C). For ambient temperatures
below 5°F (-15°C) SAE 5W-30 may be
used, provided it meets API CK-4 or CJ-4
oil specifications and biodiesel or biodiesel
blended fuel is not used as fuel for the
engine. Use of 0W-40 and 0W-30 synthetic
oils that meet API CK-4 or CJ-4
certification can be used in operations
where the ambient temperature never
exceeds 32°F (0°C). 0W-40 and 0W-30 oils
do not offer the same level of protection
against fuel dilution as do higher
multigrade oils. Higher cylinder wear can
be experienced when using 0W-40 or
0W-30 oils in high-load situations. Using a
multigrade oil helps improve engine
cranking in low-temperature conditions,
reduces deposit formation and increases
engine durability. The use of a fuel
economy oil such as an API FA-4 oil is not
approved for this engine.
ENGINE MAINTENANCE - Engine Lubricating Oil Recommendations and Specifications
40 Y53-1183-1G1 (05/19)
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