Performance Specification Service Category Description Frequently Asked Questions
The new API CJ-4 oils are made for high-performance diesel engines designed to meet 2007 on-highway exhaust emission standards. API CJ-4 oils exceed previous performance requirements and are specifically designed to protect emission control systems, help comply with emission standards, reduce engine wear, and control piston deposits and oil consumption.
  API CJ-4 oils are also engineered for use in previous model year engines and intended
to maintain oil drain intervals when used in conjunction with Ultra-Low Sulfur Diesel Fuel
(15 ppm maximum sulfur). As always, you should follow engine manufacturers' recommendations for specific application guidelines for all engine oil products.

International Truck and Engine website Caterpillar Website General Motors website

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