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API Service Category CJ-4
describes oils for use in high-speed four-stroke cycle diesel
engines designed to meet 2007 model year on-highway exhaust
emission standards as well as for previous model years. |
These oils are compounded for use in all applications
with diesel fuels ranging in sulfur content up to 500 ppm (0.05% by
weight). However, the use of these oils with greater than 15 ppm (0.0015%
by weight) sulfur fuel may impact exhaust aftertreatment system durability
and/or oil drain interval.
These oils are especially effective at sustaining
emission control system durability where particulate filters and
other advanced aftertreatment systems are used. Optimum protection
is provided for control of catalyst poisoning, particulate filter
blocking, engine wear, piston deposits, low- and high-temperature
stability, soot handling properties, oxidative thickening, foaming,
and viscosity loss due to shear.
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Engine oils that meet
the API Service Category CJ-4 designation have been tested in accordance
with the ACC Code and may use the API Base
Oil Interchangeability Guidelines and the API Guidelines for SAE Viscosity-Grade
Engine Testing. API CJ-4 oils exceed the performance
criteria of API CI-4 with CI-4 PLUS, CI-4, CH-4, CG-4 and CF-4 and
can effectively lubricate engines calling for those API Service
Categories. When using
CJ-4 oil with higher than 15 ppm sulfur fuel, consult the engine
manufacturer for service interval.
The first license date for API CJ-4 will be October
15, 2006.
Effective May 1, 2006, marketers may license
products meeting API CJ-4 requirements as API CI-4 with CI-4 PLUS,
CI-4, CH-4, CG-4, and
CF-4.
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