Engine Oil; Engine Oil Quality And Service Categories; Api Cj-4 For High Performance Diesel Engines - Navistar MaxxForce DT 9 Operation And Maintenance Manual

SECTION 2 – REQUIREMENTS FOR FUEL, ENGINE OIL, AND COOLANT

Engine Oil

ENGINE OIL QUALITY AND SERVICE CATEGORIES

The American Petroleum Institute (API) defines engine oil quality
by service categories that define oil performance measured in
standardized engine tests.

API CJ-4 FOR HIGH PERFORMANCE DIESEL ENGINES

Figure 9 API Identification symbol
API CJ-4 oils are recommended for high speed diesel engines
with advanced exhaust aftertreatment systems that meet 2007
and beyond on-highway exhaust emission standards.
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NOTE: Mineral and synthetic oils are acceptable for use
provided they meet the API category recommendations and
ambient temperature guidelines.
API CJ-4 oils provide protection against the following:
• Catalyst poisoning and particulate blockage
• Engine wear
• Piston deposits
• Soot related viscosity increase, deposits, and wear
• Viscosity loss due to shear
• Oxidative thickening
• Oil foaming and aeration
API CJ-4 oil, in combination with Ultra Low Sulfur Diesel
(ULSD) fuel [0.0015% (15 ppm) maximum sulfur content],
is recommended to maintain performance and durability of
aftertreatment systems meeting 2007 and beyond diesel
emission regulations.
API CI-4 oils are allowed in diesel engines that meet these
regulations.
Particulate Filter (DPF) cleaning service intervals.
Form No. 1172040R1
Printed in the United States of America
Use of the CI-4 engine oil shortens Diesel