Convoy® 15w-40 Cj-4 / Ci-4 Plus Motor Oil


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Heavy-Duty Parasynthetic Motor Oil



Convoy 15W-40 CJ-4/CI-4 Plus provides protection where the API service category CJ-4 engine oil is recommended for model year 2007 and newer diesel engines. The enhanced synthetic and PAO synthetic base oils provide superior all-temperature properties, while the conventional oil gives Convoy its parasynthetic name and provides seal protection for the engine’s entire drain interval.



  • Superior friction reduction – improved efficiency
  • Protection against wear and corrosion
  • Long-life oil for extended drain intervals (with oil analysis)
  • Reduced sludge and varnish formation
  • Superior thermal and oxidation stability
  • Excellent soot control and acid neutralization