Mobil Delvac™ Super FE

High-performance diesel engine oil

Mobil Delvac™ Extreme FE 10W-30 diesel engine oil with FA-4 identifier

Mobil Delvac™ Super FE 10W-30 is an advanced diesel engine oil that helps extend engine life, allowing you to run your business with confidence. It meets or exceeds the new API FA-4 specification for fuel-efficient engine oils, as well as key original equipment manufacturer (OEM) requirements.

Developed in close collaboration with major OEMs, Mobil Delvac Super FE 10W-30 engine oil is recommended for use in the extreme applications and operating conditions found in the on-road trucking industry. Its carefully tailored formulation provides:

  • Potential to improve fuel economy*
  • Extended oil drain interval (ODI) potential up to 1.5X the average OEM ODI recommendation
  • Excellent wear protection
  • Outstanding high-temperature performance

Mobil Delvac Super FE 10W-30 engine oil should only be used where an API FA-4 oil is recommended by the OEM. Before using this product in an engine, users should consult recommendations as shown in the owner’s manual or other service bulletins.

Mobil Delvac Super FE 10W-30 diesel engine oil is recommended by Exxon Mobil for use in:

  • The latest heavy-duty diesel engines operating in extreme applications, where API FA-4 is recommended by the engine builder/OEM
  • Engines equipped with emission control systems, including exhaust after treatment systems
  • On-highway applications operating in both high-speed/high-load conditions and short haul pick-up/delivery

*Meets or exceeds API FA-4 specification.
Average OEM ODI recommendation based on recommended oil drain intervals from major U.S. engine manufacturers using API CJ-4 oils for a variety of service severity levels and engine models. Average OEM ODI API CJ-4 recommendation to substantiate multiplier claims is 31,750 miles. Results may vary based on vehicle/engine condition, driving and environmental conditions. Consult OEM or Exxon Mobil before implementing extended ODIs, especially if the equipment/vehicle is under the OEM’s warranty.

Features and Benefits

Mobil Delvac Super FE is formulated with optimized base oil technology, containing hydro-processed base stocks and a tailored additive system to deliver extended performance for up to 50% beyond OEM-recommended oil drain intervals¹. The proprietary formulation delivers excellent wear protection, superior oxidation stability, and outstanding TBN retention. Mobil Delvac Super FE also provides outstanding resistance to oil consumption, oxidation, corrosive and abrasive wear, and high temperature deposits.

Mobil Delvac Super FE is engineered to provide greater potential fuel economy benefits than typical SAE 10W-30 oils² .

The key benefits include:

¹ Results may vary based on vehicle/engine condition, driving and environmental conditions Consult OEM or ExxonMobil before implementing extended ODIs.

²  Meets API FA-4 specification



Advantages and Potential Benefits

Potential to improve fuel economy²

Engineered to provide greater potential fuel economy benefits than typical SAE 10W-30 oils.

Superior oxidation stability

Extended ODI capability¹. Reduced low temperature sludge build-up and high temperature deposits

Excellent soot and viscosity control

Greater engine efficiency, long engine life and long oil life

Excellent oil consumption control

Lower oil costs due to less make-up oil during operation

Outstanding TBN reserves

Corrosion protection and extended drain intervals for both new and old engines using up to 500 ppm sulfur diesel fuel

Low temperature fluidity and pumpability

Formulated for smooth starting in cold weather

Resistance to corrosive and abrasive wear

Long life of critical wear surfaces

Component compatibility

Long gasket and seal life

Low ash formulation meeting API FA-4 requirements

Long emissions aftertreatment life (DPF, DOC and SCR)

Meets API SN

Suitable for use in gasoline engines requiring an oil meeting the API SN specification



     •  Formulated for use in the latest heavy duty diesel engines, where PI FA-4 is recommended by the OEM.

     •  Engines equipped with emission control systems including exhaust aftertreatment systems.

     •  On-highway applications operating in both high speed/high load and short haul pick-up/delivery service.


Specifications and Approvals

This product has the following approvals:

Detroit Detroit Fluids Specification 93K223


This product meets or exceeds the requirements of:





Cummins CES 20087


Properties and Specifications




SAE 10W-30

Kinematic Viscosity @ 100 C, mm2/s, ASTM D445


Kinematic Viscosity @ 40 C, mm2/s, ASTM D445


Viscosity Index, ASTM D2270


Pour Point, °C, ASTM D97


Density @ 15 C, g/ml, ASTM D1298


Flash Point, Cleveland Open Cup, °C, ASTM D92


Ash, Sulfated, mass%, ASTM D874


Total Base Number, mgKOH/g, ASTM D2896


Cold-Cranking Simulator, Apparent Viscosity @ -25 C, mPa.s, ASTM D5293


Mini-Rotary Viscometer, Apparent Viscosity, -30 C, mPa.s, ASTM D4684


Hi-Temp Hi-Shear Viscosity @ 150 C 1x10(6) sec(-1), mPa.s, ASTM D4683



Health and safety

Health and Safety recommendations for this product can be found on the Material Safety Data Sheet (MSDS) @

  • Heavy-duty-lubricant-faq

    Heavy-duty lubricants FAQs

    Read our Mobil Delvac™ and Mobil Delvac 1™ product-related frequently asked questions.

    Learn more
  • Mobil Delvac Distributor Locator on Tablet

    Heavy-duty lubricant distributor locator

    Use our locator tool to find out where to buy Mobil Delvac™ products in your area.

    Find now