Mobil Delvac diesel engine oils help on-and off-highway fleets, fleet managers and owner-operators reach their business goals. Helping to increase oil drain intervals and boost uptime, these API CK-4, API FA-4 oils are designed to outperform current CJ-4 oils. Learn more about Mobil Delvac heavy-duty diesel engine oils below. If you can’t find what you need here, please reach out to authorized distributors for more API CK-4, API FA-4 information.

Mobil delvac engine oil imp perf CAEN

API CK-4, API FA-4 Mobil Delvac™ engine oils were compared to CJ-4

Mobil Delvac™ 1300 Super and Mobil Delvac™ Elite engine oils. The test results showed that the API CK-4, API FA-4 oils provided 20 percent improved wear protection,* 50 percent improved oxidation resistance† and 80 percent improved viscosity control.† In addition, the API CK-4, API FA-4 oils showed enhanced fuel economy potential (for FA-4 products only) and protection beyond original equipment manufacturer (OEM) oil drain intervals (ODI).

*Based on a comparison of Cummins ISM and Mack T-12 engine test results.

†Based on a comparison of Volvo T-13 engine test results.

Mobil Delvac heavy-duty diesel engine oils

  • Mobil Delvac 1™

    Mobil Delvac 1™

    Mobil Delvac 1 is an advanced synthetic diesel engine oil that provides extended drain capability and exceptional low-temperature performance with the potential to improve fuel economy.‡ It meets or exceeds the requirements of OEMs, and its state-of-the-art technology provides:

    • Outstanding performance at extreme temperatures
    • Our best cold-weather protection
    • Our best protection for drivers with extended oil drain intervals
    • Enhanced emissions systems protection in a variety of severe conditions

  • Mobil Delvac™ Extreme

    Mobil Delvac™ Extreme

    Mobil Delvac Extreme is a premium synthetic blend, high performance diesel engine oil that helps extend engine life while providing long drain capability for modern diesel engines operating in extreme conditions. Its boosted formulation provides:

    • Updated high-temperature performance/oxidation stability
    • Superior engine protection
    • Excellent anti-wear performance
    • Excellent soot and viscosity control

  • Mobil Delvac™ 1300 Super

    Mobil Delvac™ 1300 Super

    Mobil Delvac 1300 Super is an advanced diesel engine oil that meets or exceeds OEM requirements and delivers high performance in both on- and off-highway applications. Its carefully tailored formulation provides:

    • Performance for up to 50 percent beyond OEM recommended ODIs§
    • Outstanding high-temperature performance
    • Superior oxidation stability
    • Excellent soot and viscosity control

*Based on a comparison of Cummins ISM and Mack T-12 engine test results.

†Based on a comparison of Volvo T-13 engine test results.

‡Compared to a 15W-40 conventional engine oil. Actual savings are dependent upon vehicle/engine type, outside temperature, driving conditions and your current engine oil viscosity.

§Results may vary based on vehicle/engine condition, driving and environmental conditions. Consult OEM or Imperial before implementing extended ODIs.

API CK-4, API FA-4 products: Mobil Delvac™ diesel engine oils