Paccar PX-9 Operator's Manual - page 79
MAINTENANCE SPECIFICATIONS
Cummins Engine Standard
Classification (CES)
American Petroleum Institute
Classification (API)
Comments
CES-20071
CES-20072
CES-20076
CES-20077
API CH-4/SJ
NOT recommended. Lubricating oil
drain interval must be reduced by 50%.
Aftertreatment maintenance interval will
be reduced.
CES-20078
CI-4/SL
Aftertreatment maintenance interval will
be reduced.
CES-20081
CJ-4/SL
Maximum aftertreatment maintenance
interval. No change in lubricating oil
drain interval.
NOTE
A lubricating oil that meets the
API
performance
classification
CJ-4/SL may not meet the CES
20081 requirement. Always make
sure the lubricating oil used meets
the CES 20081 requirement in
addition to the API performance
classification CJ-4/SL.
PACCAR recommends the use of
high-quality SAE 10W30 API CJ-4
heavy-duty engine oil.
The primary PACCAR
recommendation is for the use of
10W30 multigrade lubricating oil
for normal operation at ambient
temperatures above 5°F (-15°C).
For ambient temperatures below
5°F (-15°C) SAE 5W30 may be
used, provided it meets API CJ-4
oil specifications and biodiesel or
biodiesel blended fuel is not used as
fuel for the engine. Using a multigrade
oil helps improve engine cranking in
low-temperature conditions, reduces
deposit formation and increases
engine durability.
Use of “synthetic engine oils” (those
made with API group 3 or group 4
base stocks) is permitted subject to
the same performance and viscosity
limitations of petroleum (mineral)
based engine oils. The same oil
change intervals must be applied
to synthetic oils that are applied to
petroleum (mineral) based engine oils.
(12/2014)
Y53-1185-1B1
5-25
5